momentum
What can be changed on an object that has a constant mass to increase the momentum?
velocity
Define impulse
The change in momentum
What type of collision is it called when objects hit each other but move apart.
Elastic collision
What has a greater momentum, a 300 kg motorcycle moving at 10 m/s or a a 0.025 bullet 800 m/s?
the motorcycle
Calculate the impulse of a 2 kg object that is initially moving 1 m/s when the speed is increased to 3 m/s?
4 Ns or 4 kg m/s
What type of collision is it called when objects hit each other and then stick together?
inelastic collision
When objects exert a force on each other the total momentum of the system does what?
remains the same
If a 3500 kg cannon is at rest with a 60 kg clown in it and the clown is fired out of the cannon at 15 m/s what is the final speed of the cannon and in what direction?
0.25 m/s in the opposite direction of the clown
Define a Newton
The force it would give a mass 1kg to accelerate 1 m/s^2
Two objects at rest are separated by a spring, when the spring is released, the total momentum after the spring is released is equal to?
0 kg m/s or 0 Ns
Calculate the time required of a 500 N force to stop a 1000 kg car moving at 7 m/s to stop.
1.4 s
In the mythbusters video were the cars colliding of equal mass going 50 mph in the opposite directions equal to one car hitting a wall at 100 mph or one car going 50mph hitting a wall?
one car equal to hitting a wall at 50 mph
What is the difference between inertia and momentum (sometimes referred to as moving inertia)?
inertia is only related to the mass of an object whether it is moving or not doesn't matter, momentum is equal to the mass times the velocity.
Calculate the Force required to stop a 10 kg object initially moving at 10 m/s in 1 s.
100 N
Which would change the objects impulse the most
a)triple the force and decrease the time by half
b) 1/3 the force applied for half the time
c) double the force and double the time
c