Physics
4. A 20-kg box sits on an incline of 30 from the horizontal. The coefficient of friction between the box and the incline is o.30. Find the acceleration of the box down the incline.
You are a crash test analyst for Toyota. Car 1 (mass = 900 kg) is at rest while Car 2 (mass = 1700 kg) is traveling toward Car 1 at 15.0 m/s. The two cars collide and and their bumpers stick together. What is the resulting momentum after the collision?
which type of which type of orbit is shown in the picture below?
On a train moving , 75 m/s you roll a ball towards the front of the train with a speed of 5m/s. Your friend standing some unknown distance away from you catches it. To a person outside the train, the ball traveled 220m until it was caught. How far away is your friend standing from you?
A star was observed to have a planet orbiting it at a distance of 1.12108 km. The orbital period of the planet is 329 days. Calculate the mass of the star.
Polaris is also called the North Star because Earth's NorthPole points toward it. As Earth rotates, other stars seem tospin around Polaris in a counterclockwise direction. In one.day, the stars will make one complete circle (360) aroundPolaris. Compare the positions of the constellations in thetwo diagrams. Calculate how many hours have passedbetween the first and second diagrams.
