Physics equations/08-Linear Momentum and Collisions/Q:oneDcollision/More practice

B

1 On object of mass 3 kg that is moving at a velocity of 17m/s collides with a stationary object of mass 10.2 kg. What is the final velocity if they stick? (Assume no external friction.)

	a) 2.68m/s.
	b) 3.22m/s.
	c) 3.86m/s.
	d) 4.64m/s.
	e) 5.56m/s.

2 A car of mass 634 kg is driving on an icy road at a speed of 17 m/s, when it collides with a stationary truck. After the collision they stick and move at a speed of 5.5 m/s. What was the mass of the truck?

	a) 767 kg
	b) 921 kg
	c) 1105 kg
	d) 1326 kg
	e) 1591 kg

3

A 159 gm bullet strikes a ballistic pendulum of mass 2.08 kg (before the bullet struck). After impact, the pendulum rises by 65 cm. What was the speed of the bullet?

Ballistic pendulum

	a) 44 m/s.
	b) 47 m/s.
	c) 50 m/s.
	d) 54 m/s.
	e) 58 m/s.