1.16 Answers to parachute worksheet
1.16 Answers to parachute worksheet
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· When his parachute opens, the air resistance increases
· This is because the parachute has a large surface area
· But his weight remains the same
· So now there is a resultant force upwards
· So, because of Newton’s Second Law, there is an acceleration upwards
· So he decelerates
· A rain drop’s weight is constant as it falls
· Initially, its weight downwards causes it to accelerate downwards
· But as it gets faster the air resistance upwards increases
· Eventually, the weight down is balanced by the air resistance up
· When the forces are balanced it falls with a constant speed (because of Newton’s First Law)
· This speed is the terminal velocity
