Impulse Momentum

The units for Impulse are

• N/s

• N-s

• N

• m/s

Which takes more force  to catch, a bowling ball or a ping pong ball?

• bowling ball because it has more momentum

• ping pong ball because it has more momentum

• both require the same amount of force when catching

• bowling ball because it has less momentum

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Jen (50 k g) and David (75 k g), Both on Rollerblades, Push off Each Other Abruptly. After the Push, Jen Has a Velocity of −3.0 m/s. What Is David’s Velocity?

• + 2.0 m/s

• + 3.0 m/s

• + 4.5 m/s

Tags

NGSS.HS-PS2-2

A 1000-k g Car Is Moving at 10 m/s with Respect to the Ground When the Car Hits a Barrier. The Car Is Stopped in 0.5 s by the Force of the Barrier on the Car. What Is the Magnitude of the Average Force the Barrier Exerted on the Car During the Collision?

• 2000 N

• 5000 N

• 20,000 N

Tags

NGSS.HS-PS2-1

A 2-kg Rubber Ball with an Initial Speed of 10 m/s Bounces off a Wall. Immediately After the Bounce, the Ball Has a Speed of 5 m/s. What Is the magnitude of the ball's change in momentum?

• 10 kg m/s

• 20 kg m/s

• 30 kg m/s

Tags

NGSS.HS-PS2-2

When the speed of an object is doubled, its momentum...

• remains unchanged in accord with the conservation of momentum.

• doubles.

• quadruples.

• decreases.

Tags

NGSS.HS-PS2-2

The impulse experienced by a body is equal to the change in its

• velocity

• kinetic energy

• momentum

• potential energy

Tags

NGSS.HS-PS2-2

A baseball bat applies a 22 N force to a baseball over a period of 0.13 s, what is the change in momentum experienced by the ball? FΔt = mΔv

• 8.34 N

• 15.789 s

• 23.5 N.s

• 2.86 N.s

Tags

NGSS.HS-PS2-1

has more momentum, a heavy truck moving at 30 km/h or a light truck moving at 30 km/h?

• Heavy truck

• Light truck

• both has the same momentum

• cannot be determined.

Tags

NGSS.HS-PS2-2

A moderate force will break an egg. However, an egg dropped on the road usually breaks, while one dropped on the grass usually does not break. This is because for the egg dropped on the grass

• the change in momentum is greater.

• the change in momentum is less.

• the time interval for stopping is greater.

• the time interval for stopping is less.

Tags

NGSS.HS-PS2-2