Ahollywood stuntman is preparing for a dangerous car stunt. he must drive a car at high speed toward the edge of a cliff and break just before going over the edge. the distance from the car’s starting position to the edge is 100 m. the car’s breaks can manage a maximum deceleration of -8 m/s^2. if the whole movie sequence is going to take 10 seconds, what is the maximum starting velocity that the car can possess if the stuntman is to be successful?

 Maximum starting velocity that the car can possess if the stuntman is to be successful = 50 m/s

Explanation:

  We have equation of motion , , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

 In this case, displacement = 100 meter, acceleration = -8 , time = 10 seconds, we need to find initial velocity.

Substituting

 

So, Maximum starting velocity that the car can possess if the stuntman is to be successful = 50 m/s

The answer is as follows in the photo