Calculate the acceleration between 0s and 4s.
Calculate the acceleration between 0s and 4s.
Calculate the acceleration between 0s and 4s.
Describe the motion of the object between 4s and 8s.
Give the equation for calculating average acceleration.
Define precise
Convert 345 mm to m.
Challenge: Explain how to find the centre of mass of an irregular object.
State what happens to an object in free fall initially.
State what happens to an object in free fall initially.
Explain what happens to the velocity of a falling object as it accelerates.
Explain what happens to the velocity of a falling object as it accelerates.
What is the relationship between air resistance and terminal velocity?
What is the relationship between air resistance and terminal velocity?
Define terminal velocity.
Define terminal velocity.
Describe the purpose of a parachute.
Describe the purpose of a parachute.
Which of the following is not a terminal velocity from the graph
What has happened to a skydiver at Point B?
As the velocity of a falling object increases, the air resistance on that object…
A parachute protects a skydiver by…
Explain what is happening to a skydiver at point A
Explain what is happening to a skydiver at 30 seconds.
Explain what is happening to a skydiver from point B to point D.
Describe and explain the change in motion as a sky diver falls from a plane and opens her parachute. [6 marks]
1.When an object falls through a fluid it will initially decelerate.
1.When an object is accelerating the downwards force from gravity must be greater than the upwards force from the fluid.
1.When these forces are balanced the object will stop moving.
1.When the resultant force is zero the object will fall at a steady speed. This is called terminal velocity.
1.A parachute will make a skydiver move upwards in the air.