A-LEVEL Physics: 4.1.7: Motion in a Straight Line (Seneca)

Question 1

What is ‘Displacement’?

Answer 1

The Displacement of an Object, s, is the Distance & Direction from the Object’s Starting Position, to its Final Position. It is a Vector Quantity.

Question 2

What is ‘Velocity’?

Answer 2

The Velocity of an Object, v, is the Speed that an Object is Travelling in a Certain Direction.
It is the Rate of Change of Dispalcement.
It is a Vector Quantity.

Question 3

Velocity = …

Answer 3

Change in Speed / Change in Time

v = Δs / Δt

Question 4

___ is the Magnitude of Velocity.

Answer 4

Speed.

Question 5

What is ‘Instantaneous Speed/Velocity’?

Answer 5

The Instantaneous Speed/Velocity of an Object is the Speed/Velocity of that Object at a Given Instant in Time.

Question 6

What is ‘Average Speed/Velocity’?

Answer 6

The Average Speed/Velocity of an Object is the Total Distance/Displacement / Total Time Taken.

Question 7

What is ‘Acceleration’?

Answer 7

The Acceleration of an Object, a, is the Rate (and Direction) at which its Velocity Changes.

Question 8

Acceleration = …

Answer 8

Change in Velocity / Change in Time

a = Δv / Δt

Question 9

What Does the ‘Delta Symbol (Δ)’ Mean?

Answer 9

Change in.

Question 10

What does ‘SUVAT’ stand for? (5)

Answer 10

-s, Displacement.

-u, Initial Velocity.

-v, Final Velocity.

-a, Acceleration.

-t, Time.