year 10 terminal velocity

True or False: When a resultant force acts on an object, the object must accelerate.

• True
• False

If no resultant force acts on an object, which of the following could be true?

(select all appropriate answers)

• It is accelerating
• It is decelerating
• It is moving at constant speed
• It is stationary

If a resultant force acts on an object, which of the following could be true?

(select all appropriate answers)

• It is accelerating
• It is decelerating
• It is moving at constant speed
• It is stationary

If the surface area of a moving object increases, what happens to the magnitude of the air resistance force acting on it?

• Increases
• Decreases
• Remains constant

Compared to an object with a smaller surface area, an object with a larger surface area will have …

• a higher terminal velocity
• a lower terminal velocity
• the same terminal velocity

If an object is moving downwards at constant speed and a force is applied upwards, what is the first thing which happens?

• Its speed increases
• Its speed decreases
• It stops

If an object is moving left at constant speed and a force is applied leftwards, what is the first thing which happens?

• Its speed increases
• Its speed decreases
• It stops

If an object is moving downwards at constant speed and a force is applied upwards, what happens to its downwards speed?

• It increases
• It decreases
• It remains constant

When a skydiver first exits an aeroplane, which force is larger?

• Weight
• Air resistance
• Forces are equal

When a skydiver reaches terminal velocity, which force is larger?

• Weight
• Air resistance
• Forces are equal