Forces

Question 1

what is the formula for acceleration?

Answer 1

change in velocity/change in time

🔺v/🔺t

v
at

Question 2

what is a vector?

Answer 2

a physical quantity with both magnitude and direction

Question 3

what is a scalar?

Answer 3

a physical quantity with magnitude ONLY

Question 4

give examples of scalar quantities (4)

Answer 4

energy
work
power
time

Question 5

give examples of vector quantities (4)

Answer 5

force
momentum
acceleration
velocity

Question 6

what is displacement?

Answer 6

how far in s straight line you are from somewhere

Question 7

how do you calculate distance?

Answer 7

d=speed x time

d
st

Question 8

what is the formula for velocity?

Answer 8

v= displacement/time

v=x/t

x
vt

Question 9

what is acceleration measured in?

Answer 9

m/s^2

Question 10

what is velocity measured in?

Answer 10

m/s

Question 11

what is speed measured in?

Answer 11

m/s

Question 12

what is the gradient of a velocity-time graph?

Answer 12

acceleration

Question 13

what is the area underneath a velocity-time graph?

Answer 13

displacement

Question 14

what is the gradient of a displacement-time graph?

Answer 14

velocity

Question 15

what’s the formula for a trapezium?

Answer 15

(a+b)/2 xh

Question 16

what is the acceleration under gravity?

Answer 16

10m/s^2

Question 17

what’s the formula for force?

Answer 17

f=ma

g=a

Question 18

what is u?

Answer 18

initial velocity

m/s

Question 19

what is v?

Answer 19

final velocity

Question 20

what is a?

Answer 20

acceleration

Question 21

what is x?

Answer 21

displacement

Question 22

unbalanced =_________

Answer 22

movement

Question 23

what can forces do to objects?

Answer 23

change its shape
give it its shape
speed it up
cause it to lose/store energy

Question 24

a stretched spring stores ______ until it shrinks again

Answer 24

energy

Question 25

_______ is done when you stretch a spring?

Answer 25

work

Question 26

what are unbalanced forces?

Answer 26

forces that cause a change in the motion of an object

Question 27

list 4 things that create a force

Answer 27

magnetism
contact
gravity
charge imbalance (electrostatic)

Question 28

if you ___ the distance, the force gets ____ times smaller

Answer 28

1. double

2. x4

Question 29

what do free body diagrams do?

Answer 29

show forces acting on an object

Question 30

the _____ stops the mass from falling

Answer 30

normal