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If a footballer kicks a ball straight down the pitch at 6 ms-1 at an angle θ of 30° above the horizontal, what is the maximum height reached by the ball?

First we must remember our equations of motion, (SUVAT equations).S = Displacement U = Initial velocity V = Final velocity A = Acceleration T = TimeV = U + A TS = U T + (1/2) A T 2 V 2 = U 2 + 2 A SS = (1/2)...
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Answered by Lorcan M. • Physics tutor
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Explain what the terminal velocity of an object is.

The terminal velocity of an object is the highest velocity it can reach when falling through a defined medium, usually air in practice. This constant velocity is achieved when the net force applied to the ob...
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Answered by Thomas N. • Physics tutor
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Explain the forces involved in a pendulum set up.

Just as the pendulum is released, the pendulum ball is at its maximum acceleration. The force due to gravity (weight) is acting vertically downwards, giving it a force component acting perpendicular to the s...
Answered by • Physics tutor
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Why do I keep losing marks on 6 markers?

My best tips for you are: 1.) make sure you have 6 DIFFERENT points; a good way to keep each point clear is to write in bullet points instead of paragraphs (you can always write more than 6 if you think they...
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Answered by Felix N. • Physics tutor
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A person swims from a depth of 0.5m to 1.7m below the surface of the sea. Denisty Sea Water = 1030 kg/m^3. g=Gravitational Field Strength = 9.8 N/kg. Calculate the change in pressure on the swimmer and give the unit.

Use equation: Pressure = density x depth in the fluid x gravitational field strength. We know the in increase in pressure will be the difference between the Final Pressure (at 1.7m) and the Initial Pressure ...
JS
Answered by Jack S. • Physics tutor
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