Acar of mass 960.0 kg accelerates away from an intersection on a horizontal road. when the car speed is 51.1 km/hr (14.2 m/s), the net power which the engine supplies is 3700.0 w (in addition to the extra power required to make up for air resistance and friction). calculate the acceleration of the car at that time.

Explanation:

The power supplied by the engine is given by

P = Fv

where

F is the force applied

v is the velocity of the car

Here we have

P = 3700 W

v = 14.2 m/s

So we can solve the equation to find the average force:

The net force applied on the car is also equal to

F = ma

where

m = 960.0 kg is the mass of the car

a is the acceleration

Re-arranging the equation, we find the acceleration:

v 154.9= 0.9 length length s little over 154.9cm

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.