Determine the kinetic energy of the projectile of mass 25 kg at the highest point of its trajectory, if it was launched with an initial speed of 30 m/s and at an initial angle of 45° with respect to the horizontal? a. 5625 J c. 5825 J b. 5725 J d. 5525 J

Q: Q2/ An object of mass 15 kg is moving with a uniform velocity of 4 ms. What is the kinetic energy…

A: Given data:  Mass (m) = 15 kg Velocity (v) = 4 m/s Required: Kinetic Energy (KE)

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A: F→ = -3.80i^ + 5.20j^ + 3.10k^ N d→ = 1.80i^ + 2.10j^ + 6.90k^ m m = 2.90 kg vi = 3.60 m/s vf = ?

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.