2/1 Newton's second law of motion quiz

The increasing speed of a falling object is caused by _____________.

• force

• mass

• speed

• gravity

A 20 kg bike accelerates at 10 m/s2. What was the force?

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

Football A has a lesser mass than football B. Which football will have greater acceleration when both are thrown with the same force in the same direction?

• Football A

• Football B

• They will have the same acceleration

• Mass has no effect on acceleration

A hiker’s velocity begins at 1.8 m/s uphill and changes to 1.5 m/s uphill. How do you know that the hiker has a negative acceleration?

• His direction was unchanged.

• His direction changed.

• His speed increased.

• His speed decreased.

What happens to the acceleration when the force on an object is doubled?

• acceleration becomes half

• acceleration also doubles

• acceleration becomes zero

• no change in the acceleration

Calculate your weight on earth and on the moon.(2 marks)

Differentiate mass and weight by means of location and the value. (2 marks)

When a car goes around a corner at 20 mph, why do we say it accelerates?

• Cars always accelerate when they are in motion

• The car is accelerating because it's changing direction

• The car accelerates because it's going 20 mph

• The car is accelerating because of the velocity is constant