4. A speedboat travelling east is pulling two water skiers, using two ropes attached to the back comers of the boat. Each rope makes an angle of 30° on either side of the boat's axis. The force
exerted by each rope is 400 N. If the boat is moving in a straight line at constant speed, what
force must it be exerting to keep the pair of skiers moving? (Ignore friction) (4 marks)
Hint: When dealing with vectors break into components and deal with x/y directions separate.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

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.