9.2 Changes in speed

Question	Answer
acceleration	a change of speed/ a measure of how quickly the change of speed happens.
why do objects fall towards the earth	the force of gravity pulls the object towards the earth
an acceleration of 9.8 m/s2 is called?	1 g
the speed of an object increases by how much every second that it falls	10m/s or 36 km/h
air resistance	friction between the air and a moving object
terminal velocity	the final velocity at which an object falls, with no further acceleration possible due to air resistance
average acceleration formula	change in speed divided by the time
3 typical accelerations	free fall = 9.8 = 1g a sneeze = 29.4 = 3g rollercoaster = "
acceleration can measured in?	meters per second (m/s) or 1 kilometer per hour or second(km/h/)
what happens on a speed time graph?	the gradient is the acceleration is the moving object, the area below a speed time graph is the distance that the object has traveled.

Resource summary

	Created by hadil musawi over 6 years ago