Review of Speed, Velocity, Acceleration

Which of the following best defines acceleration?

• The change in the distance divided by the change in time

• The change in the position of an object.

• The change in the time it takes to move from one place to another

• The change in the velocity divided by the change in time.

An object that is traveling east at a constant rate has

• velocity, but neither acceleration nor speed.

• speed, but neither velocity nor acceleration.

• speed and velocity, but no acceleration

• acceleration and speed, but no velocity.

After playing a video game about frogs, Shana and Aurlyn want to know how quickly their pet frog, Skipper, can hop. What could Shana and Aurlyn do to find the answer?

• They could take Skipper outside and see how long it takes him to hop 2 meters.

• They could take Skipper outside many times to see how long it takes him to do one hop each time.

• They could take Skipper outside and see how long it takes him to hop 0.5 meters up into the air.

• They could take Skipper outside and see how long it takes him to get his back legs off the ground.

Tags

NGSS.MS-PS3-1

In an outdoor walking/running lab, your partner walked 20 meters north in 5 seconds. What was your partner’s velocity?

• 4 m/s

• 4 m/s North

• 5 m/s

• 5 m/s North

Unlike acceleration and velocity, speed does NOT need to specify

• mass

• distance

• direction

• time

How could the speed of a car be determined?

• distance and time

• distance and size

• weight and time

• weight and size

Tags

NGSS.MS-PS3-1

A motorcycle is being driven on a road moving north at 40 miles per hour. A car is driving on the same road moving south at 40 miles per hour. Which of the following is true?

• The motorcycle and the car are moving in opposite directions, so their velocities are different.

• The motorcycle and the car are moving in opposite directions, so their speeds are different

• The motorcycle and car are moving at the same velocity but different speeds.

• The motorcycle and car are moving at the same velocity and the same speed.

Select all of the ways that a person or object can accelerate:

• Speed Up

• Slow Down

• Change Directions

• Travel at a constant speed

An object with increasing acceleration is also increasing in which other property?

• mass

• temperature

• velocity

• volume

Tags

NGSS.MS-PS3-1

Velocity can only be described by including both

• speed and direction of the object in motion

• mass and direction of the object in motion.

• speed and volume of the object in motion.

• mass and volume of the object in motion