An athlete wants to run a 1500m race with an average velocity of 6.00 m/s. After running the first 500m, he notices that the time elapsed is 100 seconds. Panicking, he accelerates for “t” seconds at 0.2 m/seconds^2 and finishes the race at his new faster speed. He makes it just in time. How long did he accelerate for? (Use 5 significant figures in the answer)

Construction work in the city means you have to drive at a steady 23 km/h. Once past this zone, you speed up to 56 km/h in 10 s. You reach the freeway and, with the same acceleration, speed up for another 8 s to reach a higher speed. What is this final speed in km/h to one decimal place?

Ilya and Anya each can run at a speed of 8.60 mph and walk at a speed of 3.70 mph. They set off together on a route of length 5.00 miles. Anya walks half of the distance and runs the other half, while Ilya walks half of the time and runs the other half.

A runner competes in a 1500 meter straight-line race. The runner completes the first 650 meters in 4.00 minutes and the following 850 meters in 6.00 minutes. Calculate the average velocity of the runner in km per hour.

Nerve impulses in the human body travel the speed of about 100 M Dash S. A 1.6 M tall man accidentally drops a hammer on his toe how long in seconds does it take for the nerve impulse to travel from his toe td his brain

In coming to a stop, a car leaves skid marks 77 mm long on the highway.   Assuming a deceleration of 4.30 m/s2m/s2 , estimate the speed of the car just before braking. Express your answer using two significant figures.

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Figure below shows the position of a cart moves along the x-axis. What is the object's velocity at 2.0 s, in m/s? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. x (m) 2 1 A K 0 T -1 -2 B 2 4 6 8 10 C D 12 14 X6 E 18 -t (s)

A car starts from 2.00 m/s and accelerates at 4.00 m/s2 for 6.0 s, it coasts for 5.00 s, and then slows down at a rate of 2.00 m/s2to a stop. How far has it traveled, in meters? Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

A driver of a car traveling at 52 km h¹ applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h¹ in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars. Which of the two cars traveled farther after the brakes were applied?