Acentripetal force of acts on a car going around a curve. if another car goes around the same curve but with twice the speed, the centripetal force acting on that car is

The centripetal on the car will become 4 times when the velocity gets twice.

Explanation:

As we know that centripetal force on the car of mass m and moving with constant speed v given as

m=mass

v=velocity

r=radius of the circular arc

We are assuming that the mass of the both the car is same.

If the velocity of the car gets twice 2 v

The new centripetal force on the car

Therefore we can say that centripetal on the car will become 4 times when the velocity gets twice.

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.