Q: A runner decreases his velocity from 20 m/s to 10 m/s in 2.0 s. What is the average accelaration?
A: The expression for the average acceleration is aav=vf-viΔt
Q: How far a car travels in one second with initial speed of 10 m/s and acceleration of 1 ?
A: Write the given values of the problem- Time(t) t=1 second initial speed(u) u=10 m/s Acceleration(a)…
Q: A man jogs halfway to his destination at 8 km/h and walks the rest of the way at 6 km/h. What is his…
A: let's say that destination is 2x km away. therefore total distance to be covered is 2x Average Speed…
Q: A ball is thrown vertically downward with an initial velocity of 5.6 m/s. How far (distance in…
A: From the question it is given that Initial velocity of ball u = 5.6 m/s Time taken: t = 3.78 sec
Q: A car is moving at a speed of 10 m/s, so if its speed is doubled due to uniform acceleration within…
A: Given data The velocity of the car is given as u = 10 m/s. The time interval is given as t = 10 s.…
Q: How far will a runner travel running at 12 m/s for 1 minute (60 seconds)?
A: Given: Speed = 12 m/s and Time = 1 minute = 60 seconds
Q: A runner starts from rest and runs forward 24 meters in 2.8 seconds at a constant acceleration. How…
A:
Q: . A truck increases its speed uniformly from 13 kph to 50 kph in 25 sec. What is the most nearly the…
A: Given data: Initial velocity v1= 13 k/h Final velocityv2 =50 k/h Time t = 25 s
Q: A car travels up a hill at a constant speed of 10.0m/s and goes down through the same path at a…
A: Given data: Speed when car travels up a hill (V1) = 10.0 m/s Speed when car travels down the hill…
Q: A light plane must reach a speed of 35 m/s for takeoff.How long a runway is needed if the (constant)…
A:
Q: A ball dropped from a helicopter takes 1.6 s to fall the final 35 m. From what height was itdropped?
A: The initial velocity when it has to still fall 35m is
Q: A ball is thrown vertically upwards at 2.8 m/s. For its complete trip (up and back down to the…
A:
Q: A coin was tossed vertically straight upward with initial velocity 78 m/s. As the coin reaches…
A: Given, A coin was tossed vertically straight upward with initial velocity 78 m/s. Only force acting…
Q: An automobile driver puts on the brakes and decelerates from 40 m/s to zero in 20 s. What distance…
A: Given data *The initial speed of the car is u = 40 m/s *The final speed of the car is v = 0 m/s *The…
Q: How far have you traveled after going a constant 5.06 m/s for 8.70 seconds?
A: Given that, Speed = 5.06 m/s Time = 8.70 s Formula :…
Q: A high-jumper leaves the ground with a speed of 3 m/s. How high (in m) can he leap?
A: Given: The speed of the jumper is v=3 m/s. The expression to calculate the height the jumper can…
Q: A car slows down uniformly from a speed of 90km/h to 30km/h in 9minutes. How far did it travel in…
A:
Q: A car starts from 2.00 m/s and accelerates at 4.00 m/s2 for 6.00 s. How far has it traveled, in…
A: The initial velocity of the car, u = 2.00 m/s. The acceleration of the car, a = 4.00 m/s2. The time…
Q: A motorist travels for 2h at 70 km/h and 1h at 100 km/h. What is her average speed for the trip? *
A: The initial speed, u=70 km/h The initial time taken, t1=2 h The final speed, v=100 km/h The…
Q: A boy travels with an average speed 15 m/s For 25min. How much distance did he travel?
A:
Q: A Ferrari sports car can accelerate from rest to 81 km/h (about 60 mi/h) in 1.2 s. What is its…
A: Initial speed, u = 0 km/h = 0 m/s Final speed, v= 81 km/h = 22.5 m/s Time, t = 1.2 s
Q: A car accelerates from rest to a speed of 35 m/s in 7.5 s. How far did the car gomin this time?
A:
Q: A stone is released from a height of 180 m, reached the ground with the speed of 60m/s. How long did…
A: height of stone, s= 180 m final velocity of stone near ground, v=60 m/s let t be the time taken
Q: What must be the average speed to travel 250 km in 2 hr? And in m / s?
A: Introduction: In physics, many of the physical quantity, came across in day to day life. Speed is…
Q: If a car is driving with a velocity of 30m/s, how long will it take to travel 220 m?
A: Given data The velocity of car is v = 30 m/s. The distance travelled by car is d = 220 m. The time…
Q: During a hard sneeze, your eyes might shut for 0.31 s. If you are driving a car at 81 km/h during…
A: Given data The time interval of a hard sneeze is given as t = 0.31 s. The speed of the car is given…
Q: A ball is thrown upward and passes a powerline that is 15 ft off the ground at times 0.5 s on the…
A: Given: The height of the ball thrown upwards=15ft=4.5m time on the way up t1=0.5s time on the way…
Q: A jumbo jet must reach a speed of 360 km/h on the runway for takeoff. What is the lowest constant…
A:
Q: A motorist traveling on a straight stretch of open highway sets his cruise control at 90.0 km/h. How…
A:
Q: A car travels along a highway in a straight line with a speed of 30 m/s and then reaches 50 m/s, in…
A: Answer:- Given Initial Speed (u) = 30 m/s Final speed (V) = 50 m/s Distance (S) = 180 m Time…
Q: A light plane must reach a speed of 82 m/s for takeoff. How long a runway is needed if the…
A: Given, Speed of the light plane v = 82 m/s acceleration a = 33 m/s2 find the length of the runway
Q: A stone is thrown vertically upward with a speed of 12 m/s from the top of a building 100 m high.…
A: Initial vertical velocity, Height of the building, Acceleration due to gravity,
Q: An object is movine from 13m/s to 20km/h, and it takes that object 3 minutes, what is the objects…
A:
Q: An object has a speed of 2.00 m/s. Three seconds later it is going 8.00 m/s. What average…
A: Given data: Initial speed (Vi) = 2.00 m/s Time taken (Δt) = 3 seconds Final speed (Vf) = 8.00 m/s…
Q: A car accelerates uniformly from rest to final speed of 18m/s in 9 sec. How far does it travel…
A: given u = 0 ( as car start from rest so initial velocity is zero) v = 18 m/s ( final velocity) t…
Q: A ball is thrown vertically upward with a speed of 4.9 m/s. What is the time of the flight?
A: As per guidelines, i am solving first part of question , Please post other question seperately.
Q: A long-distance runner has an average speed of 3.0 m/s during a race. How far, in meters, does the…
A: Given , average speed = 3 m/s time (t) 10 min
Q: An airplane taking off from a landing field has a run of 500 m. If it starts from rest, moves with a…
A: Suppose that the velocity at which the plane takes off is v and acceleration is a Initial speed is u…
Q: Motorist travels for 3.0 h at 80 km/h and 2.0 h at 100 km/h. What is her average speed for the trip?
A: Average speed =total distance /total time taken
Q: How much time does it take a train to increases its speed from 6.0 m/s to 36 m/s over a distance of…
A: Solution: Given that initial velocity u = 6 m/s final velocity v = 36 m/s distance s = 120 m
Q: We drive a distance of 1 km at 16 km/h. Then we drive an additional distance of 1 km at 32 km/h.…
A: formula for average speed= total distancetotal time total distance= (1+1)= 2 km time= distancespeed…
Q: How far does a car going 15 m/s travel in 6 s? How far would a jet going 235 m/s travel in 6 s?
A: Velocity of car, v = 15 m/s Time interval, t = 6 s Distance traveled by car is given by, Therefore,…
Q: According to its computer, a robot that left its closet and traveled 1200 m, had an average speed of…
A: Answer Given data Distance travelled d = 1200 m Average speed s = 20 m/s We have to find time taken…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Usually, Tony travels to Bunbury from Perth city in 2.50 hours. One day he increases his average speed by 12.0 km/h and takes 22.5 minutes less time to reach Bunbury. (a) What was his usual average speed? What was the distance travelled? (b) On the way he stopped at a rail crossing (6.00 m wide) and a train (total length 144m) decelerating at -0.585 ms2 just entered the crossing with a velocity of 13.7 m s¹. Sketch a diagram and find the minimum time for the last carriage of the train to clear the crossing.A car travels up a hill at a constant speed of 10.0m/s and goes down through the same path at a constant speed of 15.0m/s, covering the same distance. What is the average speed of the car during the entire trip?You normally drive on the freeway between San Diego and Los Angeles at an average speed of 105 km/h (65 mi/h), and the trip takes 1 h and 50 min. On a Friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 70 km/h (43 mi/h). How much longer does the trip take?
- A cyclist cycles 50.0 km [N] and then 30.0 km [E]. The total time taken for the trip is 1.00 h. What is its average velocity?A cyclist rides 8.0 km east for 35 minutes, then he turns and heads west for 10 minutes and 3.7 km. Finally, he rides east for 18 knm, which takes 45 minutes. (a) What is the final displacement of the cyclist? (b) What is his average velocity? (m/s)A motorboat starting from rest travels in a straight line on a lake.(a) If the boat achieves a speed of 8.0 m/s in 10 s, what is the boat’s average acceleration? (b) Then, in 5.0 more seconds, the boat’s speed is 12 m/s. What is the boat’s average acceleration for the total time?
- The driver of a car traveling at 110km/h slams on the brakes so that the car undergoes a constant acceleration, skidding to a complete stop at 4.5s . What is the average acceleration of the car during braking?You normally drive on a freeway between San Diego and Los Angeles at an average speed of 105 km/h, and the trip takes 2 h and 20 mins. On a Friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 70 km/h. How much longer does the trip take?A motorboat starting from rest travels in a straight line on a lake.(a) If the boat achieves a speed of 7 m/s in 11.9 s, what is the boat's average acceleration?Then, in 3.1 more seconds, the boat's speed is 20 m/s.(b) What is the boat's average acceleration for the total time?
- Traveling with an initial speed of 70 kph, a car accelerates at 6000 km/hr2 along a straight road. How long will ittake to reach a speed of 120 kph? Also, through what distance does the car travel during this time?A student drops an object out the window of the top floor of a high-rise dormitory. (a) Neglecting air resistance, how fast is the object traveling when it strikes the ground at the end of 2.4 s? Express the speed in mi/h for a familiar comparison.A man drives his car down a straight road at 5.2 km at 40 kph at which point he minutes. What is the average velocity of the driver from the time that the car started to the time that the driver arrived at the gas station?