When a drag strip vehicle reaches a velocity of 60 m/s, it begins a negative acceleration by releasing a drag chute and applying its brakes. While reducing its velocity back to zero, its acceleration along a straight line path is a constant -7.5 m/s2 . What displacement does it undergo during this deceleration period

240 meters

Explanation:

The distance traveled by the vehicle can be calculated using the following equation:

  (1)

Where:

x: is the displacement

: is the final speed = 0 (reduces its velocity back to zero)                    

: is the initial speed = 60 m/s

a: is the acceleration = -7.5 m/s²

By solving equation (1) for x we have:

Therefore, the vehicle undergoes 240 meters of displacement during the deceleration period.

I hope it helps you!

prolly a beacuse the momentuem the car has increases while going down hill

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min