Tommy accelerates from 10m/s at 6m/s/s for 15s. What velocity does he get to?
100m/s
200
If a distance time graph shows a horizontal line, what is happening to the object?
it is stationary.
200
What do I get if I take the gradient of a distance time graph?
velocity
200
What happens to a ball if I drop it from 2m?
Accelerates at 10m/s/s
300
v = Δd/Δt (solve for Δt)
Δt= Δd/v
300
Jimmy pushes a box 5m across his room. He pushes with a Force of 20N. How much work has he done?
100J
300
If a velocity time graph shows a horizontal line, what is happening to the object?
Object is at constant veleocity
300
What do I get if I take the area of a velocity time graph?
The distance travelled
300
A 500N force is used to accelerate a 2kg shot putt, what is the acceleration
250m/s/s
400
ΔEp = mgΔh (solve for g)
g=ΔEp/mΔh
400
Eddy jumps off a 10m diving board. He weighs 60kg. How much Kinetic Energy does he have at the water?
DOUBLE JEOPARDY
Why is this answer not true in the real world (full explanation needed)
6000J
Would be less due to losses to sound and kinetic energy - via air resistance
400
If a velocity time graph shows a straight line with negative gradient, what is happening to the object?
it is constantly decelarating
400
What do I get if I take the gradient of a velocity time graph?
The acceleration
400
If I launch an apple straight up from ground level at 50m/s what VELOCITY will it be going when it hits the ground?
-50m/s (50m/s is a speed)
500
Ek = 1/2 mv Squared (Solve for v)
v=Root (2Ek/m) OR v= root (Ek/half m)
500
Laura runs at 3m/s. She weighs 50kg. How much Kinetic Energy does she have?
225J
500
If a distance time graph shows a positive exponential line, what is happening to the object?
It is accelerating
500
What do I get if I take the area of an acceleration time graph?
the velocity
500
A cup of water weighs 300g and has an area of .25m squared. How much pressure is it exerting on the table that it sits on