Aprojectile of mass 2 kg is fired with a speed of 20 m/s at an angle of 30° with respect to the horizontal. (a) calculate the initial total energy of the projectile given that the reference point of zero gravitational potential energy at the launch position. (b) calculate the kinetic energy at the highest vertical position of the projectile. (c) calculate the gravitational potential energy at the highest vertical position. (d) calculate the maximum height that the projectile reaches. compare this result by solving the same problem using your knowledge of projectile motion.
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Physics, 21.06.2019 17:30
How does convection affect our atmosphere? our layers of earth? our oceans?
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A10.0 kg cart and a 15kg cart are locked together with a compressed spring between them. they are then released so that the spring pushes the two carts apart. the 10.0 kg cart is moving at 4.5 m/s afterward. how fast is the 15kg cart moving? 3.0 m/s 2.0 m/s 4.5 m/s 5.0 m/s
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Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy
Answers: 1
Aprojectile of mass 2 kg is fired with a speed of 20 m/s at an angle of 30° with respect to the hori...
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