Impulse/math practice
Definition of impulse
What is a force during a time interval causing a change in momentum.
mv
What is the equation for momentum?
What is a vector quantity that is the product of mass and velocity?
Mass unit
kg
The impulse has the same direction as this quantity.
What is the force?
A quantity that has both magnitude and direction
What is a vector?
The p in the equation Ft = delta p.
What is momentum?
Impulse symbol
J
The impulse equation
What is J= Ft = Delta p?
Change in momentum equation
What is delta p = mvf - mvi?
When someone throws an egg at a sheet and at a wall, the reason why the egg doesn't break when it hits the sheet.
What is the sheet applies a smaller force over a longer period of time?
Momentum symbol
P
These are what impulse depends on.
What are force and time?
A 1 kg ball moving at 30 m/s is hit by a bat and rebounds at 40 m/s. Find the change in momentum.
What is -70 kgm/s?
A force of 5N acts on a 2kg object for 3 seconds. Determine the impulse.
What is 15 Ns?
Impulse units
Ns and kgm/s
The time to apply a 5N force to a 6 kg cart that receives an impulse of 20 Ns.
What is 4s?
A 25 kg car has a momentum of 1500 kgm/s. Determine the velocity of the car.
60m/s
An impulse of 32 Ns acts for 4 seconds on a 5 kg object. Determine the force.
What is F = 8 N?
Momentum unit
kgm/s