Quiz about Year 10 Science - Motion and forces quiz

Question 1

A lady in a car travelling at 30 m/s slows down steadily to a stop in 6 s. What is the correct formula to use and rearrange to find her acceleration?

Accepted Answer

$$v=u+at$$

Answer

$$s=\frac{1}{2}\left(v+u\right)t$$

Answer

$$s=ut+\frac{1}{2}at^2$$

Answer

$$v^2=u^2+2as$$

Question 2

If a rock is dropped from 3 m above the ground on Mars, at what speed will it hit the ground?

Accepted Answer

5 m/s

Answer

4 m/s

Answer

3 m/s

Answer

12 m/s

Question 3

A lady in a car travelling at 30 m/s slows down steadily to a stop in 6 s. What is the correct formula to use to find the distance she travelled during that time?

Accepted Answer

$$s=\frac{1}{2}\left(v+u\right)t$$

Answer

$$a=\frac{v-u}{t}$$

Answer

$$s=ut+\frac{1}{2}at^2$$

Answer

$$v^2=u^2+2as$$

Question 4

A boy on a bike accelerates from 8 m/s to 12 m/s at 1 m/s². What formula should you use (and possibly rearrange) to find the time it took him to accelerate?

Accepted Answer

$$a=\frac{v-u}{t}$$

Answer

$$s=\frac{1}{2}\left(v+u\right)t$$

Answer

$$s=ut+\frac{1}{2}at^2$$

Answer

$$v^2=u^2+2as$$

Question 5

What is the net force (value and direction) acting on the object?

Accepted Answer

10 N down

Answer

10 N up

Answer

50 N down

Answer

10 N right

Question 6

A sports car starts from rest and travels a distance of 98 m in 7 s. What formula should you use (and possibly rearrange) to calculate the acceleration of the car?

Accepted Answer

$$s=ut+\frac{1}{2}at^2$$

Answer

$$v=u+at$$

Answer

$$a=\frac{v-u}{t}$$

Answer

$$v^2=u^2+2as$$

Question 7

A model train moving at 20 cm/s increases its speed uniformly to 60 cm/s in 5 s. Calculate the acceleration and distance travelled in that time. What is the train's acceleration during that time?

Accepted Answer

8 cm/s

Answer

0.8 m/s

Answer

0.8 cm/s

Answer

8 m/s

Question 8

A Formula 1 car accelerates uniformly from rest at 20 m/s². What formula would you choose the calculate the velocity of the car after it has travelled 400 m?

Accepted Answer

$$v^2=u^2+2as$$

Answer

$$s=\frac{1}{2}\left(v+u\right)t$$

Answer

$$a=\frac{v-u}{t}$$

Answer

$$s=ut+\frac{1}{2}at^2$$

Question 9

A Formula 1 car accelerates uniformly from rest to 210 km/h in 6 s. What formula would you choose the calculate the distance travelled during that time?

Accepted Answer

$$s=\frac{1}{2}\left(v+u\right)t$$

Answer

$$a=\frac{v-u}{t}$$

Answer

$$s=ut+\frac{1}{2}at^2$$

Answer

$$v^2=u^2+2as$$

Question 10

When a stone is dropped down an empty well, it takes 4 seconds to reach the bottom. What is the formula to use to find how deep the well is?

Accepted Answer

$$s=ut+\frac{1}{2}at^2$$

Answer

$$v=u+at$$

Answer

$$s=\frac{1}{2}\left(v+u\right)t$$

Answer

$$v^2=u^2+2as$$

Question 11

A car travelling at 20 m/s brakes to a stop at some traffic lights in 4 s. How far did the car travel during that time?

Accepted Answer

40 m

Answer

10 m

Answer

80 m

Answer

20 m

Question 12

What is wrong with this force diagram?

Accepted Answer

Arrow's length not proportional to force's size

Answer

Arrows not starting from the same point

Answer

Arrows not of equal length

Answer

Forces are not labelled

Question 13

The position of an object is represented at different times in the diagram. What is the displacement between E and G?

Accepted Answer

-8 m

Answer

Answer

-10 m

Answer

Question 14

The position of an object is represented at different times in the diagram. What is its speed between B and C?

Accepted Answer

Answer

-2 m/s

Answer

Answer

2 m/s

Question 15

An object's velocity is represented at different times in the diagram. Within which interval(s) is the object at rest?

Accepted Answer

CD only

Answer

AB, CD and EF

Answer

AB only

Answer

EF only

Question 16

What is the acceleration between B and C?

Accepted Answer

-3.33 m/s²

Answer

+6.67 m/s²

Answer

-6.67 m/s²

Answer

+3.33 m/s²

Question 17

A car travelling at a rate of 60 m/s is brought to rest in 440 metres. What is the correct formula to use and rearrange to find how long the car takes to stop?

Accepted Answer

$$s=\frac{1}{2}\left(v+u\right)t$$

Answer

$$v=u+at$$

Answer

$$s=ut+\frac{1}{2}at^2$$

Answer

$$v^2=u^2+2as$$

Question 18

An object dropped from rest on the moon takes 5 seconds to touch the ground. How high was the object as it was dropped?

Accepted Answer

20 metres

Answer

8 metres

Answer

10 metres

Answer

15 metres

Year 10 Science - Motion and forces quiz

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