3.1.2 Graphs of Motion

Question 1

Name the SUVAT equation linking u, t, a and v.

Answer 1

v=u+at;

Question 2

Name the SUVAT equation linking t,s,u and v.

Answer 2

s=1/2(u+v)t;

Question 3

Name the SUVAT equation linking s, a, t and u.

Answer 3

s=ut+1/2at^2;

Question 4

Name the SUVAT equation linking s, u, a and v.

Answer 4

v^2=u^2+2as;

Question 5

What does s-t (displacement - time) the graph of an accelerating body look like?

Answer 5

An exponential curve; acceleration is constant.

Question 6

What does the v-t (velocity - time) graph of an accelerating body look like?

Answer 6

A linear line; acceleration is constant, and the gradient of the line is greater than 0..

Question 7

What is the value for acceleration under gravity?

Answer 7

9.8ms^-2 - this varies slightly over the surface of the Earth.

Question 8

What does an a - t graph (acceleration - time) for constant acceleration look like?

Answer 8

A horizontal line, with a gradient of 0.

Question 9

From a body moving under constant acceleration, how will the following values vary?

• Velocity;
• Distance;

Answer 9

Its acceleration will be constant, so:

1. Its velocity will vary in a linear fashion with time;
2. The distance travelled from a starting point plotted against time will be a parabola.

Question 10

What is the symbol, quantity and SI base unit for displacement?

Answer 10

Displacement:

1. s;
2. m, metre;

Question 11

What is the symbol, quantity and SI base unit for initial velocity?

Answer 11

Initial velocity:

1. u;
2. metres per second, ms^-1;

Question 12

What is the symbol, quantity and SI base unit for final velocity?

Answer 12

Final velocity:

1. v;
2. metres per second, ms^-1;

Question 13

What is the symbol, quantity and SI base unit for acceleration?

Answer 13

Acceleration:

1. a;
2. metres per second squared, ms^-2;

Question 14

What is the symbol, quantity and SI base unit for a time interval?

Answer 14

Time interval:

1. t;
2. second, s;