A rocket is standing by to launch. While sitting on the launching pad the rocket has zero velocity and thus zero initial momentum (p1=0). When the rocket takes off, a bystander proclaims that the...

A rocket is standing by to launch. While sitting on the launching pad the rocket has zero velocity and thus zero initial momentum (p1=0). When the rocket takes off, a bystander proclaims that the...

A car (m=900kg) travelling at 70km/h hits a pedestrian (m=60kg) who is travelling at 1m/s in the same direction. After the collision the car has a velocity of 30km/h in the same direction it was originally...

a plastic sphere containing an explosive charge, rolling at 4 m/s undergoes a two dimensional explosion into 3 fragments of equal mass. when viewed from above, one fragment moves at 6 m/s at an angle...

I weigh 200lbs im holding a bottle that weighs 5lbs. I go to through the bottle at a velocity of 5mph at someone and at the last possible moment i change my mind and simply drop the bottle. How far...

A 3kg steel ball attached to a string is given an initial velocity of 1.8m/s and swings through an angle of 60 degrees, colliding with a 4kg steel cube also suspended by a string, initially at rest if...

A neutron of mass u traveling with a speed 5.00x105 m/s collides with a stationary alpha particle of mass 4u. The neutron scatters off the alpha particle at an angle 65˚ with...

A car has a momentum px(t) = 3000 N*s - (200 N*s^2)/(t+1.00s). Find the net force acting on the car at t = 4.00 s

Dwight uses a spring (k = 40 N/m) on a horizontal surface to make a launcher for model cars. The spring is attached to a holder that has a mass of 0.5 kg. If he compresses the spring and releases...

Mars has a mass of 6.4 × 1023 kg. It has a moon named Phobos with a mass of 1.07 × 1016 kg. a. If their centers are 9400 km apart, what is the force of gravity acting on Phobos? b...

Blake stands in a canoe in the middle of a lake. The canoe is stationary. Blake holds an anchor with mass 15 kg, then throws it west with a speed of 8 m/s. Blake has a mass of 115 kg and the canoe...

Lincoln goes bungee jumping. He has a mass of 102 kg. a. After his jump, Lincoln hangs from the cord motionless, with the cord stretched by 15 m. What is the spring constant of the bungee...

The period of motion for a pendulum is the amount of time it takes to swing from right to left and back to right again. The period is given by the equation , where T is the period and L is the length...

Bill forgets to put his car in park, and it starts rolling forward. When it is moving at a speed of 2 m/s, it collides with Tanya's car, which is moving 3 m/s backward. Bill's car bounces backward...

At a race track, a car of mass 1150 kg crashes into a concrete wall at a speed of 85 m/s. a. The car crashes into the wall, stopping in 0.1 seconds. What force is applied to the car...

the position vectors of two point like object of mass 100kg and 200kg are (2,4,6)m and (3,5,7)m respectively.Find the moment of inertia of the system about Y- axis

A vehicle with a momentum of 6000 kg*m/s strikes a stationary vehicle. What is the momentum of two vehicles as they move off together after the collision? using physics terms please.

Two 1-kg carts are each moving toward each other at 2 m/s. They collide and each reverses directions, moving in the opposite directions at 2 m/s. Draw a diagram showing the carts before and after...

How is momentum conserved in a collision? Explain using words, calculations, or both as well as physics terms.

I found the momentum (20,000 ns) the other things the question asks is: if this car takes 15 sec to stop, what is the average braking force? what is the time rate of change...

8.) A 1500-kg automobile, traveling at 5.0 m/s after braking, strikes a power pole and comes to a full stop in 0.1 s. Calculate the force exerted by the power pole and brakes required to stop the...