SUVAT Equations - Assessment

1.

Multiple Choice

15 mins

1 pt

A cyclist travelling at a speed of 4.2 m s^-1 accelerates at 1.1 m s^-2. In a time of 7.4 s, the distance travelled is

30 m

35 m

61 m

91 m

2.

Multiple Choice

15 mins

1 pt

A freely falling object on Earth has a speed of 5.0 m s^-1. After falling a further 20 m, its speed it

15 m s^-1

20 m s^-1

25 m s^-1

45 m s^-1

3.

Multiple Choice

15 mins

1 pt

A bus is travelling at a speed of 9.0 m s^-1. It then accelerates at a rate of 0.75 m s^-2 for a time of 8.0 s. What therefore is its final speed?

6.0 m s^-1

15 m s^-1

17 m s^-1

21 m s^-1

4.

Multiple Choice

15 mins

1 pt

The acceleration of free fall on a certain planet is 8.0 m s^-2. An object gets dropped from a height and hits the ground after 1.5 s. From what height must the object have been dropped?

6.0 m

9.0 m

11 m

12 m

5.

Multiple Choice

15 mins

1 pt

A ball is dropped from rest from a building 35.0 m high. If air resistance is neglected, then the ball will hit the ground with a speed of

8.4 m s^-1

13.1 m s^-1

18.5 m s^-1

26.2 m s^-1

6.

Multiple Choice

15 mins

1 pt

A student is asked to solve the following problem:

An object is thrown upwards with a speed of 25 m s^-1. How high will it be when the speed is 12 m s^-1?

Which equation will allow the problem to be solved in a SINGLE calculation?

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

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

$v=u+at$

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

7.

Multiple Choice

15 mins

1 pt

A marble is dropped from the roof of a building and takes 3.2 s to reach the ground.

The approximate height of the building is

16 m

31 m

50 m

100 m

8.

Multiple Choice

15 mins

1 pt

A girl dropped a stone into an empty well. She heard the sound of the stone hitting the bottom of the well after 4 seconds.

The depth of the well is about

20 m

40 m

80 m

160 m

9.

Multiple Choice

15 mins

1 pt

THINK CAREFULLY ABOUT THIS ONE. DRAW A DIAGRAM TO HELP YOU..!

A building has 5 floors. The windows on successive floors are separated by the same vertical distance. A brick is dropped from a window on each floor at the same time. The bricks should hit the ground at

decreasing time intervals

equal time intervals

increasing time intervals

the same time

10.

Multiple Choice

15 mins

1 pt

The acceleration due to gravity on Mars is 3.7 m s^-2.

If an object on Mars is launched vertically upwards with an initial speed of 40 m s^-1, its speed after 3.0 s will be

11 m s^-1

29 m s^-1

36 m s^-1

51 m s^-1

11.

Multiple Choice

15 mins

1 pt

FOR THIS ONE, REMEMBER WHAT YOU DID IN THE TASTER SESSIONS! ALSO, TAKE A NOTE OF THE INFO GIVEN IN THIS QUESTION AS YOU WILL NEED IT FOR THE NEXT QUESTION.

A student carries out an experiment to calculate the acceleration due to gravity, g, on Earth. A marble is dropped from a height of 2.0 m and the time taken for the marble to reach the floor is recorded.

The following readings were obtained:

0.55 s 0.57 s 0.49 s 0.56 s

Which of the following times should the student use to determine their value for g?

0.54 s

0.55 s

0.56 s

0.57 s

12.

Multiple Choice

15 mins

1 pt

With reference to the previous experiment, select the equation that would, by itself, enable the student to calculate a value for g.

$mgh=\frac{1}{2}mv^2$

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

$v=u+at$

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

13.

Multiple Choice

15 mins

1 pt

A lunar landing module is descending to the Moon’s surface at a steady velocity of 10.0 m s^-1. At a height of 120 m a small object falls from its landing gear. Assuming that the Moon’s gravitational acceleration is 1.60 m s^-2, at what speed, in m s^-1 does the object strike the Moon?

22.0

19.6

16.8

10.0

14.

Multiple Choice

15 mins

1 pt

THIS ONE TAKES MORE TIME THAN YOU MIGHT INITIALLY THINK. READ IT CAREFULLY!

An object is dropped from a cliff. How far does the object fall in the third second? Assume that g = 10 m s^-2 (HINT: Remember that the initial speed of the object is 0 m s^-1)

10 m

20 m

25 m

45 m

15.

Multiple Choice

15 mins

1 pt

ANOTHER ONE TO MAKE YOU THINK PRACTICALLY:

The winner of a 400 m race must have the greatest

acceleration.

average speed.

instantaneous speed.

maximum speed.

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