G7 Unit 3 review

What is meant by balanced forces?

• A) Forces of different magnitudes acting in the same direction
• B) Forces of equal magnitude acting in opposite directions
• C) Forces of equal magnitude acting in the same or opposite directions
• D) Forces acting only on stationary objects

Forces can act on an object that is:

• A) Moving only
• B) Not moving only
• C) Both moving and stationary
• D) Neither moving nor stationary

When are forces considered unbalanced?

• A) When they are of equal magnitude and opposite direction
• B) When they are of different magnitudes or directions
• C) When they act on stationary objects only
• D) When no force is acting on an object

Which of the following is an effect of unbalanced forces?

• A) Object remains stationary
• B) Object changes shape
• C) Object accelerates or decelerates
• D) Object maintains constant speed

What is the equation that links speed, distance, and time?

• A) Speed = Distance + Time
• B) Speed = Distance / Time
• C) Distance = Speed x Time
• D) Both B and C

When the distance and time are known, how can you calculate the speed?

• A) Distance × Time
• B) Distance / Time
• C) Time / Distance
• D) Distance + Time

How can you find the distance traveled if speed and time are known?

• A) Speed / Time
• B) Speed × Time
• C) Time / Speed
• D) Speed + Time

How do you calculate the time taken when distance and speed are known?

• A) Distance / Speed
• B) Distance × Speed
• C) Speed / Distance
• D) Distance - Speed

How do you calculate speed in different units?

• A) Use conversion factors between units
• B) Change the units of distance only
• C) Change the units of time only
• D) Use a different formula for each unit

A distance/time graph for an object moving at a constant speed away from a starting point will be:

• A) A horizontal straight line
• B) A steep straight line upward
• C) A curved line
• D) A downward line