A car travelled a distance of 200 m with initial velocity of 216 km/hr. Calculate the acceleration in meters per second of the car if it has a final velocity of 360 km/hr.

Explanation:

When the velocity changes uniformly, the object has a constant acceleration. The acceleration, the velocities, and the distance are related by the equation:

Where:

vf = final velocity

vo = initial velocity

a = acceleration

x = distance

Solving for a:

The car travels a distance of x=200 m and the velocities are:

vo = 216 Km/h

vf = 360 Km/h

Both velocities must be converted to meters by seconds.

vo = 216 Km/h *1000/3600 = 60 m/s

vf = 360 Km/h *1000/3600 = 100 m/s

The acceleration is:

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from wikipedia

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.