# Additional Physics Questions

This covers the entire specification. ENJOY!

- Created by: Moonisah
- Created on: 27-05-12 14:06

First 328 words of the document:

Moonisah Mirza

Additional Physics Questions:

1. Construct a distance time graph for a moving body in a straight line when the body is

stationary or moving with constant speed.

2. Construct a velocity timer graph for a body moving with a constant velocity

3. What is the difference between speed and velocity?

Speed is the rate of motion, or the rate of change of position. Speed is measured in the

same physical units of measurement as velocity, but does not contain an element of

direction. Speed is the magnitude component of velocity. Velocity contains both the

magnitude and direction components.

4. How do you calculate speed?

Speed = Distance / Time

5. How do you calculate speed from a distance time graph?

The gradient of a distance time graph tells us the speed at which the object is moving. We

calculate the gradient of a line

6. What is acceleration?

The acceleration of an object is its change in velocity per second.

Acceleration; change in Velocity (m/s) / time taken for that change (s)

(M/s)2

7. How do you calculate acceleration from a velocity time graph?

The slope of the line on a velocity time graph represents acceleration.

8. What does the area under a velocity time graph represent?

The area under the velocity time graph represents distance travelled.

9. What is terminal velocity?

If an object falls freely it will accelerate downwards because of the force of the weight due

to gravity , eventually its acceleration will decrease because of air resistance, the object will

reach a constant velocity when the drag force ( air resistance) on it is equal and opposite to

its weight. We call this velocity its terminal velocity.

10. How do you calculate weight?

Weight (n) = Mass (kg) x Earth gravitational pull (n/kg)

11. What is the unit of measurement for weight?

Newton.

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