Mechanics GCSE into A-level

Figure 1 shows the velocity-time graph for a car driven along a straight road.

Complete the sentence.

From B to C the forward driving force is ______________________ the backward resistive force.

• equal to

• greater than

• less than

Figure 1 shows the velocity-time graph for a car driven along a straight road.

Between A and B the car is accelerating.

Calculate the acceleration of the car between A and B in m/s². (answer with no unit.)

(a)  

Figure 1 shows the velocity-time graph for a car driven along a straight road.

What is the total distance traveled from A to D in meters? (answer to 3 sig fig with no units)

(a)  

A camera boom is used at a television studio to allow filming from different positions.

Figure 1 shows the arm of the boom in three different positions.

In which position will the weight of the camera cause the largest moment about the pivot?

• A

• B

• C

• All the same

A camera boom is used at a television studio to allow filming from different positions.

When the moment caused by the weight of the camera increases (moving from C to A), the moment caused by the counterweight ____________________ .

• decreased

• stays the same

• increases

The camera has a mass of 5.0 kg

gravitational field strength = 9.8 N/kg

Calculate the weight of the camera. (2 sig fig with the unit symbol)

(a)  

Figure 2 shows the camera boom in a new position, D.

Calculate the moment about the pivot caused by the weight of the camera (49 N) when the arm of the boom is in position D.

Moment = (a)   Nm (number only to 4 sig fig)

The figure below shows the horizontal forces acting on a car.

Which one of the statements describes the motion of the car?

• It will be slowing down.

• It will be stationary.

• It will have a constant speed.

• It will be speeding up.

During part of the journey a car is driven at a constant speed for five minutes.

Which one of the equations links distance travelled, speed and time?

• distance travelled = speed + time

• distance travelled = speed × time

• distance travelled = speed − time

• distance travelled = speed ÷ time

During a different part of the journey a car accelerates from 9 m/s to 18 m/s in 6 s.

Calculate the acceleration of the car in m/s². (no units needed on your answer)

(a)