M1

Question 1

V=
(No s)

Answer 1

V= U +AT

Question 2

V² =?

Answer 2

V² = U² + 2AS

Question 3

S=
(U and acceleration)

Answer 3

= ut + 1/2at²

Question 4

S=
(V and acceleration)

Answer 4

= vt - 1/2at²

Question 5

S =
(No acceleration)

Answer 5

= (u+v)/2 * t

Question 6

F_max=

Answer 6

μ*R

Question 7

Impulse =

Answer 7

m(v-u)

Question 8

Conservation of momentum =

Answer 8

M1U + M2U = M1V + M2V

Question 9

(Resultant) Force =

Answer 9

Mass x acceleration

Question 10

Impulse exerted on Q by P, use ……..’s mass/speed

Answer 10

Q

Question 11

Impulse exerted on Q by P means what for P

Answer 11

Impulse on Q = -Impulse of P

Question 12

When doing collision questions like impact and conservation of momentum need to consider what?

Answer 12

DIRECTION, PICK A POSITIVE WAY

Question 13

If a block is vertically falling on another, can use what?

Answer 13

Conservation of momentum, not just a horizontal thing

Question 14

Explain how you used …… being modelled as a particle (beam questions)

Answer 14

Weight acts as a point

Question 15

If solving for T, in velocity time graphs

Answer 15

Need distances as simultaneous equations

Question 16

If needing distance and have a velocity time graphs

Answer 16

Distance = area under graph

Question 17

If drawing acceleration time graph where something has 0 acceleration

Answer 17

Draw dotted axis for part doesn’t have 0 acc. Then normal line for when it does

Question 18

When using forces and given mass don’t forget….

Answer 18

G

Question 19

With long marker resolving forces questions (often with pulleys or connected particles)

Answer 19

1. F = μR
2. Write any trig ratios given
3. Pick one point and solve for R (remember to resolve weight and other forces)
4. Solve for T
5. Use T (as is same) at other point to solve for other point’s thing

Question 20

Explain how you used the fact the beam is a rod…

Answer 20

It doesn’t bend and remains rigid

Question 21

If a projection question where 2 particles are thrown and collide and asked to find ANYTHING relating to time

Answer 21

The particle thrown 1st will always be [time taken to reach top] + [t] where t is the time for the second one

Question 22

Triangle forces questions
1. Find tension
2. Normal reaction
3. Value of tan B

Answer 22

1. Tension is OPPOSITE WAY TO WTV THE PARTICLE IS, usually = weight in terms of m and g are usually fine
   -> resolve the tension though as is a triangle
2. Normal reaction equal to downward force, check if tension is up or down here and then also weight
   -> resolve tension or other forces
3. Given F= μR (some part of it)
   If on point of moving towards each other F = Tension resolved
   Tension = μR (substitute know things in)
   Then should End up with a sin B and a cos B, manipulate to get tan

Question 23

If graph question tells u to prove Some random expression with T in it

Answer 23

Find a point where distances or smt is equal - usually distances
Then find the distance for each in terms of T
Set equal and solve to get the weird expression

Question 24

Determine whether B reaches the pulley

Answer 24

1. B will move A’s distance from the ground = distance one
2. Find speed of A when it’s about to hit the ground
3. Consider which forces will make B continue to move F = ma (usually acceleration)
4. Find additional distance moved (using the speed A before ground and found acceleration)

Question 25

If thrown from a point of …m off the ground 1. Height used when calculating speed/time wtv at height less than original height 2. Returning back down from peak

Answer 25

1. -ve displacement 2. Max height + N

Question 26

Velocity time graph for object falling

Answer 26

1.Starts at initial speed given 2. At peak will reach 0 3. GOES BELOW THE GRAPH and is a vector so has direction so pick a positive way

Question 27

When squaring a root in calculator

Answer 27

put brackets around it! Otherwise it won’t be correct!

Question 28

If force applied (P) keeps object in equilibrium find: 1. Minimum force P 2. Maximum force P

Answer 28

-> Resolve perpendicular to find R and use this to calculate Fmax -> Resolve parallel where: 1. P-Friction 2. P + Friction

Question 29

What is the scenario when force keeping something in equilibrium is the minimum value

Answer 29

Object is on point sliding down, friction helps force!

Question 30

What is the scenario when the force applied to keep in equilibrium is at its max

Answer 30

When the thing is on the point of sliding up! Friction works AGAINST force!

Question 31

Find max height reached by P given does not reach the pulley

Answer 31

1. Find distance travelled by Q (other particle) before hitting floor/stopping 2. Find V of Q before hitting floor (u, a, t) 3. Find extra distance travelled by P as moves freely under gravity 4. **initial height** + Q’s travelling distance + Extra height as moves freely

Question 32

How does tension act in a rope between 2 things (connected particles and pulleys)

Answer 32

Acts in opposite directions towards each other []——>——<——[]

Question 33

For connected particles, the part not being moved by an engine is moved by what force

Answer 33

TENSION