REVIEW: Motion - Speed - Velocity - Acceleration

The distance an object travels per unit of time is ...

• distance

• speed

• displacement

• velocity

Answer explanation

The first scientist to measure speed as distance over time was Galileo.

Tags

NGSS.MS-PS3-1

When calculating distance what is the SI measurement?

• seconds

• yards

• miles

• meters

Answer explanation

The metric system was developed in France and first introduced there in 1795.

When calculating time what is the SI measurement?

• seconds

• hours

• years

• meters

Answer explanation

Time passes faster for your face than for your feet (assuming you're standing up).

When calculating speed what is the SI measurement?

• yards per minute

• miles per hour

• meters per second

• miles per second

Answer explanation

A speedometer is a great example of instantaneous speed.

How far an object moves in total is known as?

• displacement

• velocity

• acceleration

• distance

Answer explanation

Ten thousand steps are equal to about 8km or 5 miles of walking.

The distance and direction an object moves from a starting point is known as?

• displacement

• distance

• direction

• depth

Answer explanation

A Bluetooth signal normally transmits up to 30ft or 10 meters however many interference factors will cause the signal to transmit less.

What is the description of both speed and direction?

• acceleration

• speed

• displacement

• velocity

Answer explanation

If something is moving back and forth and always returns to its original position, it has speed but zero velocity because it doesn’t change position.

What measures how much an object's speed changes over a certain time?

• acceleration

• speed

• velocity

• motion

Answer explanation

Acceleration direction depends on whether the object is speeding up or slowing down.

True or False: Acceleration can be positive, negative or zero.

• True

• False

Answer explanation

A free falling object falls because of gravity acting on it.

Check all that apply: A moving object can be measured in .....

• speed

• distance

• displacement

• velocity

• acceleration

Answer explanation

One of the main causes of acceleration is gravity. Gravity will intensify or increase the acceleration causing the speed or velocity to increase.

Tags

NGSS.MS-PS3-1