Question

# A car having mass M1= 1000 Kg moving initially at V1i= 60 m/s collides with a...

A car having mass M1= 1000 Kg moving initially at V1i= 60 m/s collides with a car having mass M2= 3000 Kg that was moving initially at V2i = 20m/s. After the inelastic collision, the cars stick and move together. The final velocity of the two cars just after collision is Vf  =_______ m/s

Part A

 40 20 60 30

Part B

If the collision time is t = 0.25 seconds, the force exerted on the car having mass M2= 3000 Kg during the collision is ______ Newton.

If the collision time is t = 0.25 seconds, the force exerted on the car having mass M2= 3000 Kg during the collision is ______ Newton.

 60, 000 120, 000 30,000 240, 000

Part C

____ % of the KE is lost in the collision.

____ % of the KE is lost in the collision.

 60 40 25 75

A ball of mass M= 0.4 Kg, which is attached to a string, rotates in a circle of radius R= 0.10 m. Period (T) is the time for one rotation. To complete 10 rotations, the ball takes a total time of 15 seconds. The centripetal force required to rotate the ball is ____ Newton

Part A

 0.7 4 0.419 1.5

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