Motion & Momentum - 8th grade

What measures the quantity of matter?

• speed

• weight

• acceleration

• mass

Tags

NGSS.MS-PS1-5

Which of the following objects is not accelerating?

• a jogger moving at a constant speed

• a car that is slowing down

• Earth orbiting the Sun

• a car that is speeding up

Which of the following equals speed?

• acceleration/time

• (change in velocity)/time

• distance/time

• displacement/time

A parked car is hit by a moving car, and the two cars stick together. How does the speed of the combined cars compare to the speed of the car before the collision?

• Combined speed is the same.

• Combined speed is greater.

• Combined speed is smaller.

• Any of these could be true.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5

What is a measure of inertia?

• weight

• gravity

• momentum

• mass

Tags

NGSS.MS-PS2-2

What is 18 cm/h north an example of?

• speed

• velocity

• acceleration

• momentum

Ball A bumps into ball B. Which is the same before and after the collision?

• the momentum of ball A

• the momentum of ball B

• the sum of the momentums

• the difference in the momentums

Which of the following equals the change in velocity divided by time?

• speed

• displacement

• momentum

• acceleration

You travel to a city 200 km away in 2.5 hours. What is your average speed in km/h?

• 180 km/h

• 12.5 km/h

• 80 km/h

• 500 km/h

Two objects collide and stick together. How does the total momentum change?

• Total momentum increases.

• Total momentum decreases.

• Total momentum doesn't change.

• Total momentum is zero.

Tags

NGSS.HS-PS2-2