Forces

Question 1

What is a force?

Answer 1

It is something that act on an object whether it moves or not.

Question 2

How do you measure forces?

Answer 2

(N) Newtons

Question 3

What are examples of a contact force?

Answer 3

Friction and Air resistance.

Question 4

What is the equation to calculate speed?

Answer 4

Speed=distance/time

Question 5

Examples of non-contact forces.

Answer 5

Gravity and magnetism (repulsion)

Question 6

What is the equation for distance?

Answer 6

Distance=speed X time

Question 7

What is the equation for time?

Answer 7

Time=distance/speed

Question 8

What is an independent variable?

Answer 8

Something you change

Question 9

What is a dependant variable?

Answer 9

Something you measure

Question 10

What is a control variable?

Answer 10

Something you keep the same

Question 11

What is the equation for gravity?

Answer 11

Gravity=weight/mass

Question 12

What is the equation for mass?

Answer 12

Mass=weight/gravity

Question 13

What is Mercury’s gravity?

Answer 13

3.8N/kg

Question 14

What is Venus’s gravity?

Answer 14

8.8N/kg

Question 15

What is Earth’s gravity?

Answer 15

9.8N/kg

Question 16

What is Mars’s gravity?

Answer 16

3.8N/kg

Question 17

What is Jupiter’s gravity?

Answer 17

25N/kg

Question 18

What is Saturn’s gravity?

Answer 18

10.4N/kg

Question 19

What is Uranus’s gravity?

Answer 19

10.4N/kg

Question 20

What is Neptune’s gravity?

Answer 20

13.8N/kg