Mechanics Random Retrieval

This quiz contains all the questions in the Mechanics section. The website will pick 10 questions at random.

1 / 10

You're down the allotment and are carrying your 65 kg Nana in a 20kg wheelbarrow. Your Nana's and the wheelbarrow's weight acts 60 mm from the centre of the wheel. What force do you need to apply to the end of the handle, 1.2 m from the centre of the wheel, to move your Nana about? g = 9.81 ms^-2

9.8 N

31.9 N

41.7 N

50.3 N

2 / 10

The diagram shows a swing 1.43m long. Matilda has a mass of 35 kg and is released from rest at position A by Miss Honey. Calculate the speed of Matilda at position B.

1.94 ms^-1

3.75 ms^-1

6.5 ms^-1

14.1 ms^-1

3 / 10

Momentum is a scalar quantity.

TRUE

FALSE

4 / 10

Select the best definition for terminal velocity.

When the resultant force is zero.

When the resultant force is less than the driving force.

When the resultant force is greater than the driving force.

When the resultant force is equal to the driving force.

5 / 10

Select the best statement for Newton's 3rd Law:

An object will remain at rest or at a constant velocity unless acted on by a resultant force.

An object will remain at rest unless acted on by a resultant force.

When two objects interact they will exert equal and opposite forces on each other.

The rate of change in momentum of a body is directly proportional to the resultant force applied.

6 / 10

Four teachers are fighting over the last pack of board pens as shown in the diagram. Calculate the overall resultant force.

62.46 N

62.48 N

104.44 N

106.72 N

7 / 10

A bus is slowing down to stop at a bus stop. Select the graph which shows best describes it's motion.

A

B

C

D

8 / 10

Which image sequence best shows the motion of a iPhone being dropped from rest?

A

B

C

D

9 / 10

Which is the SI unit for acceleration?

m

ms^-1

ms^-2

m^-1

10 / 10

Select if the following is a scalar or a vector: length

Scalar

Vector

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