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3. A motorcycle and its driver have a total mass of 485.0 kg. How fast in km/h is the motorcycle moving if it has kinetic energy of 30.0 ?
1. A tow truck pulls a car from rest on a level road. The tow truck exerts a horizontal force of 1800 N on the car. The frictional force on the car is 950 N. Calculate the work done on the car by each of the following forces if the car is pulled forward 600 meters. a) the force of the tow truck on the car b) the force of friction c) the force of gravity d) the normal force
How much water (density = 1.00 X 103 kg/m3 ) must be displaced to float a cubic block of wood (density 655 kg/m3) that is 15.0 cm on a side?
Car a is traveling east at 20m/s and car b is traveling east at 30m/s, if car b is 200m behind car a how long will it take for car b to catch car a?
A plane flies east at 400m/s and them accelerates west at 6.0m/s^2 for 5 seconds. Determine the distance traveled during the 5 seconds.
To test a bicycle helmet with a mass of 0.20 kg, it is placed at a height of 1.4 m from the ground and dropped onto a force detector placed on the ground. What is the speed of the bicycle helmet just before it hits the force detector on the ground?
To test a 0.80 kg ski helmet, it is placed at a certain height from the ground and dropped onto a force detector placed on the ground. The pulse is 0.39 N • s for an interval of 0.050 s when it hits the force detector. What is the force recorded by the force detector?
A small bomb explodes in 2 pieces. A first piece of 1.20 kg moves at 18.0 m / s to the left. What is the speed in m / s of the second piece with a mass of 1.60 kg?
A loaded wagon, the mass of which is 6000 kg, rolls to the right at
2.0 m / s when it collides with an empty freight car, weighing 3000 kg, rolling to the left on the same track at 3.0 m / s. If the cars remain tied together after the collision, what is the speed and direction of the pair of cars after the collision?
A 2100 kg pickup truck collided with a stopped car, which had a mass of 1200 kg. The two vehicles sink into each other and travel together at a speed of 4.50 m / s. The initial speed of the van is ____ m / s.
