W3 - Linear Kinematics 2

Question 1

Uniform acceleration

Answer 1

Rate of change of velocity is CONSTANT

When the net external force acting on an object is constant

Question 2

How to calculate weight?

Answer 2

Mass x Gravity

Question 3

EQUATIONS OF UNIFORM ACCELERATION

What does the U refer to?

Answer 3

Initial velocity

Question 4

EQUATIONS OF UNIFORM ACCELERATION

What does the V refer to?

Answer 4

Final velocity

Question 5

EQUATIONS OF UNIFORM ACCELERATION

What does the S refer to?

Answer 5

Displacement of object

Question 6

EQUATIONS OF UNIFORM ACCELERATION

What does the A refer to?

Answer 6

Acceleration

Question 7

EQUATIONS OF UNIFORM ACCELERATION

What does the T refer to?

Answer 7

Time

Question 8

EQUATIONS FOR UNIFORM ACCELERATION

V = ……

Answer 8

V = u + at

Question 9

EQUATIONS FOR UNIFORM ACCELERATION

V^2 = …..

Answer 9

V^2 = u^2 + 2as

Question 10

EQUATIONS FOR UNIFORM ACCELERATION

S = …..

Answer 10

S = ut + 1/2at^2

Question 11

If person A has a heavier mass than person B, do they reach the ground faster?

Answer 11

NO

Not if air resistance is the same

Question 12

What is vertical acceleration always due to?

Answer 12

Gravity

Question 13

What is acceleration always at when horizontal for motion in flight ?

Answer 13

0

Question 14

What do we assume acceleration due to gravity is?

Answer 14

-9.81 m/s^2

Question 15

When an object is in flight what is the only acceleration acting horizontally on it?

Answer 15

Air resistance

– Assume its negligible = horizontal acceleration always 0

Question 16

In projectile motion, is the vertical motion influenced by horizontal velocity?

Answer 16

NO

Question 17

What is resultant velocity?

Answer 17

Actual velocity of object at take off

Question 18

PROJECTILE MOTION

Resultant velocity

Vres^2 = ….

Answer 18

Vres^2 = Vx^2 + Vy^2

Question 19

What do peak velocities tell?

Answer 19

Highest velocity achieved during same concentric lift phase.

Single point

ALWAYS a lot higher than the mean.