P4 Explaining Motion Quiz

Philae is a small spacecraft that landed on Comet 67P in November 2014. The mass of the spacecraft was 100 kg. The gravitational field strength of the comet was estimated to be 10^-3 N/kg. The gravitational field strength on the Earth is 10 N/kg.

Calculate the weight of Philae when it was on Earth.

Philae is a small spacecraft that landed on Comet 67P in November 2014. The mass of the spacecraft was 100 kg. The gravitational field strength of the comet was estimated to be 10^-3 N/kg. The gravitational field strength on the Earth is 10 N/kg.

Calculate the weight of Philae when it landed on the comet.

Philae is a small spacecraft that landed on Comet 67P in November 2014. The mass of the spacecraft was 100 kg. The gravitational field strength of the comet was estimated to be 10^-3 N/kg. The gravitational field strength on the Earth is 10 N/kg.

Explain why the spacecraft weighs much less on the comet.

A bus leaves a bus stop and reaches a speed of 15 m/s in 10 s. Calculate its acceleration.

A car accelerates at 3 m/s² for 8 s. By how much will its speed have increase.

A sports car accelerates from 0 to 222 km/h while travelling 400 m.

a- Convert 222 km/h to m/s.

b- Calculate the average acceleration of the car.

The graph shows a simplified picture of how the speed of a car changed during the first 30 s of a journey.

Explain how you can tell that the graph is not a true picture of

the journey.

The graph shows a simplified picture of how the speed of a car changed during the first 30 s of a journey.

Describe the journey, giving as much detail as you can about each stage.

The graph shows a simplified picture of how the speed of a car changed during the first 30 s of a journey.

Calculate the distance travelled during the 30 s.

What is the momentum of:

a- a hockey ball of mass 0.4 kg moving at 5 m/s?

b- a jogger of mass 55 kg running at 4 m/s?

c- a van of mass 10 000 kg travelling at 15 m/s?

d- a car ferry of mass 20 000 000 kg moving at 0.5 m/s?