(a) What is the pressure when a force of 200N acts on an area of 4m/ Show your working. (3) (b) A force of 300N produces a pressure of 20 N/m². On what are is it acting? Show your working. (3)

(c) In a hydraulic jack, the small piston (A) has an area of 0.1 m and the large piston (B) has an area of 20 m.

(i) If a mechanic pushes on A with a force of 200N, what will be the pressure? Show your working. (2)

(ii) What will be the pressure at piston B? (1) (iii) Calculate the upwards force generated at piston B. Show your working. (2)

(iv) What is the biggest mass of car the mechanic could lift by exerting this force? (1)

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.