Mechanics Random Retrieval

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

1 / 10

A window cleaner leans her ladder against a vertical wall in order to start work. The ladder has a length of 6 m and mass of 15 kg, she places it at an angle of 50°. Calculate the reaction force from the wall at W. g=9.81 ms_-2

8.9 N

61.7 N

87.7 N

123.5 N

2 / 10

A mini-cannon of mass 35.5 kg fires a turnip of mass 1.2 kg. If the turnip leaves the cannon at 214 ms^-1 over 0.3 s, with what force does the mini-cannon recoil?

43 N

257 N

360 N

856 N

3 / 10

A ball bearing is dropped in various mediums with various densities. Select the graph that shows the ball bearing dropped in a vacuum.

A

B

C

D

4 / 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.

5 / 10

Select the missing phrase. "A joiner uses a hammer to hit a nail into wood. When the hammer strikes the nail, _____________

the nail exerts an equal force back on the hammer and doesn't move.

the nail exerts an equal force back on the hammer and moves into the wood.

the nail exerts a force proportional to its size back on the hammer and doesn't move.

the nail exerts a force proportional to its size back on the hammer and moves into the wood.

6 / 10

You hang up your GCSE Physics certificate in a frame. The whole thing has a mass of 3.2 kg. Calculate the the tension in the picture frame wire. g = 9.81 ms^-2

21 N

23 N

43 N

46 N

7 / 10

A strong woman lifts a car at an angle of 25° and horizontal component of force is 1300 N. Calculate vertical component of the lift.

520.2 N

633.9 N

634.4 N

1501.1 N

8 / 10

A shotput is launched on sports day by the strongest Y7. She throws it at an angle of 30° at a speed of 18 ms^-1, releasing it at a height of 1.9 m. Calculate how far she throws it. g_Earth = 9.81 ms^-2

1.72 m

2.98 m

18.23 m

31.58 m

9 / 10

David walks 6 km west then 8 km north. Calculate his displacement.

6 km

8 km

10 km

14 km

10 / 10

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

Scalar

Vector

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