Motion

Question 1

What is the formula for speed?

Answer 1

Speed= Distance/ Time

Question 2

What is used to measure distance?

Answer 2

Tape measure, trundle wheel

Question 3

What is used to measure time?

Answer 3

Stopwatch

Question 4

What is velocity?

Answer 4

Speed in a specific/ one direction.

Question 5

What is speed?

Answer 5

The rate at which an object changes its position in space.

Question 6

What is distance?

Answer 6

A measure of how far something moves through space.

Question 7

What is the formula for acceleration?

Answer 7

Acceleration= V-U/ T
where v= final velocity
u= intial velocity

Question 8

What is the formula for velocity?

Answer 8

V= v+u/2

Question 9

Ticker tape:Define the object’s motion.

S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F

Answer 9

Constant speed

Question 10

Ticker tape: Define the object’s motion.

S . . . . . . . . . . . . . F

Answer 10

Getting quicker/ accelerating

Question 11

Ticker tape: Define the object’s motion.

S . . . . . . . . . . . . . F

Answer 11

Getting slower/ decelerating

Question 12

How do you calculate the speed of an object using a distance- time graph?

Answer 12

Speed= Rise/ Run

Question 13

What is circular motion? Give an example.

Answer 13

Movement of an object in a circle, e.g. Earth orbiting the sun.

Question 14

The further falling objects fall, the …….. they fall.

Answer 14

quicker

Question 15

Why do falling objects accelerate?

Answer 15

Due to Earth’s gravity pull.

Question 16

What is the acceleration due to gravity on Earth?

Answer 16

9. 8m/second squared

i. e. for every second the object falls, its speed increases by 9.8m/sec.

Question 17

Why do objects fall more slowly on the moon?

Answer 17

Because there is less gravity.

Question 18

What is gravity?

Answer 18

Gravity is a force that attracts a body to the centre of the Earth, or any other physical body having mass.

Question 19

What is Newton’s First Law of Motion?

Answer 19

An object at rest will remain at rest unless an unbalanced force acts upon it. An object in motion will continue in motion with the same speed and direction unless an unbalanced force acts upon it. LAW OF INERTIA.

Question 20

What is Newton’s Second Law of Motion?

Answer 20

Force= Mass x Acceleration (F=Ma)
If the mass of an object s kept constant, then its acceleration is directly related to the forces put on it, e.g. if you double the force you double the rate of acceleration.

Question 21

What is Newton’s Third Law of Motion?

Answer 21

For every action there is an equal and opposite reaction.
Forces always come in pairs. If one force is larger than the other, the object will move in the direction of the larger force.

Question 22

Falling objects do not continue to fall faster once they reach a velocity of aprprox. 200km/ h. Why is this?

Answer 22

The fall is slowed by the increasing air resistance.

Question 23

What is friction?

Answer 23

Friction is a force that acts in the opposite direction of motion.