What is the height of the red ball 3.30 seconds

Reference no: EM1322290

Q1. A blue ball is thrown upward with an initial speed of 21m/s, from a height of 0.5 meters above the ground. 2.60 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 12.50m/s from a height of 25.10 meters above the ground. The force of gravity due to the earth results in the balls each has the constant downward acceleration of 9.8 m/s2.

What is the height of the red ball 3.30 seconds after the blue ball is thrown.

Q2. Newton's second law
A roller coaster is towed up an incline at a steady speed of 0.51m/s by a chain parallel to the surface of the incline. The slope is 2.85 % that means that the elevation increases by 2.85 m for every 100m of horizontal distance. The mass of the roller coaster is 410kg. Neglect friction, what is the magnitude of force exerted on the roller coaster by chain?

Reference no: EM1322290

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