Gr 7 Term 3 Exam Review #2

A train traveled 250 kilometers (km) from its starting point in 5 hours (h). What is the speed of the train?

• A) 20 km/h                           

   

• B) 25 km/h

• C) 50 km/h

• D) 500 km/h

What is the meaning of reference point?

What is the meaning of position?

What is the meaning of motion?

What is the meaning of speed?

To determine if an object has changed position, you need to know its position relative to itself.        

 

• True

• False

Lizzie is pushing Alex on a scooter. Lizzie is pushing with 75 N of force to the left, and Alex is helping with 20 N to the left. What is the net force on the scooter?

• A) 95 N, to the right      

• B) 95 N, to the left

• C) 55 N, to the right

• D) 55 N, to the left

Two people are pulling on a chain in opposite directions with forces of 500 N and 600 N. The forces would best be described as ____.            

• A) balanced forces

• B) unbalanced forces

• C) action-reaction forces

• D) gravitational forces

Two people are pulling on a chain in opposite directions with forces of 800 N and 600 N. The forces would best be described as __________________________________________.

What happens to an object that is moving at 10 m/s if only balanced forces act on it?