Motion

Question 1

Scalar quantity

Answer 1

quantities having only magnitude and no direction

e.g- speed, mass, distance, volume

Question 2

Vector quantity

Answer 2

quantities having both magnitude and direction. e.g- velocity, force, displacement

Question 3

Displacement

Answer 3

length of the shortest path travelled by a body (m)

Question 4

Distance

Answer 4

Length of the total path travelled by a body (m)

Question 5

Velocity

Answer 5

Speed of something in a given direction (m/s)

Question 6

Acceleration

Answer 6

Rate at which an object changes its velocity (m/s2)

Question 7

Speed

Answer 7

Distance travelled by a body per unit of time (m/s)

Question 8

Formula for Speed distance time

Answer 8

Speed = distance/ time

Question 9

What does the slope in the graph show?

Answer 9

acceleration of object

Question 10

What does a horizontal straight line show on a graph?

Answer 10

uniform velocity

Question 11

what lies on the x-axis and y-axis?

Answer 11

time on x-acis, velocity on y-axis

Question 12

Equation for slope and velocity

Answer 12

Slope = 1/2 v2

Question 13

Mass

Answer 13

Measure of the amount of matter in an object (kg)

Question 14

Weight

Answer 14

Vertical force experienced by a mass as a result of gravitation (N)

Question 15

What is earths gravity?

Answer 15

9.807m/s2

Question 16

Force

Answer 16

A push or pull on an object resulting from the object’s interaction with another object. (N)

Question 17

Newton’s First law of motion

Answer 17

Every object persists to stay in uniform motion or at rest unless an external force acts upon it

Question 18

Newton’s second law of motion

Answer 18

Force is equal to change of momentum per change in time

F=kma

Question 19

Newton’s third law of motion

Answer 19

For every action there is an equal and opposite reaction

Question 20

Conservation of momentum

Answer 20

For a collision occuring between 2 objects in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after collision.