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Questions in physics

[Homework Help] A 1.0 kg ball is thrown into the air with an initial velocity of 30 m/s. How much kinetic energy does the ball have?

[Homework Help] A force exerted over a distance to move an object is a. measured in newtons b. velocity c. momentum d. work

[Homework Help] A field hockey ball is launched from the ground at an angle to the horizontal. What are the ball's horizontal and vertical accelerations at its maximum height?

[Homework Help] A professional cyclist rides a bicycle that is 92 percent efficient. For every 100 joules of energy he exerts as input work on the pedals, how many joules of output work are used to move the bicycle?

[Homework Help] How do you calculate moments with 3 separate weights of different amounts at different points? Weights and distances: - 200 N located at the left end - 100 N located 2 meters from the left end - 300 N located at the right end Distances between weights: - 2 meters between the 200 N weight and the 100 N weight - 1 meter between the 100 N weight and the right end Diagram representation: 200 N 100 N 300 N ------------------------------------------------------------------------------------- <---------------2M----------------> /_\ <---------------2M--------------> What would the moments be?

[Homework Help] You take a running jump off the end of a diving platform at a speed of 7 m/s and splash into the water 1.5 seconds later. a) How far horizontally do you land from your takeoff point? b) How high is the diving platform?

[Homework Help] How much work does a mother do if she lifts each of her twin babies upward 1.0 m? Each baby weighs 90 N.

[Homework Help] How do you find \(\mu\)?

[Homework Help] Gravity is considered what type of force? A. Conservative B. Non-conservative

[Homework Help] How do you increase the mechanical advantage of a ramp?