mechanics-linear/projectile motion

Question 1

What is displacement ?

Answer 1

straight line length from start to end.

Question 2

what is velocity ?

Answer 2

rate of change of displacement per second.

Question 3

what is acceleration ?

Answer 3

rate of change of velocity per second.

Question 4

what would the velocity of a object traveling in a circle be after one cycle ?

Answer 4

0 because the displacement is 0 because start and end is the same point.

Question 5

What is the gradient of a displacement-time graph ?

Answer 5

velocity.

Question 6

What does it mean when the gradient is always changing on a displacement-time graph ?

Answer 6

The system is accelerating/deccelerating.

Question 7

what is the gradient on a velocity-time graph ?

Answer 7

acceleration.

Question 8

What does it mean when the gradient is always changing on a velocity-time graph ?

Answer 8

changing acceleration.

Question 9

what is freefall ?

Answer 9

when a objects weight is the only force acting upon it.

Question 10

What is acceleration due to gravity ?

Answer 10

9.81ms^-2

Question 11

At when is the velocity 0 of a bouncing ball ?

Answer 11

when it reaches its peaks.

Question 12

What is the area underneath a velocity time graph ?

Answer 12

displacement.

Question 13

What is the suvat not given on the equation sheet ?

Answer 13

s=vt-1/2at^2

Question 14

When can you not use suvats ?

Answer 14

When acceleration is changing.

Question 15

For projectile motion why can s=d/t be used for horizontal component of velocity ?

Answer 15

Because there is no horizontal acceleration.

Question 16

What do the letters in suvat represent ?

Answer 16

s=distance
u=initial velocity
v=final velocity
a=acceleration
t=time

Question 17

When is acceleration negative ?

Answer 17

when it acts in the opposite direction of the velocity.