Motion

Question 1

What is speed

Answer 1

Speed (measured in metres per second) is the distance moved by an object each second

Question 2

Formula for speed

Answer 2

distance/time

Question 3

what is acceleration

Answer 3

is the rate of change of velocity: In other words, how much the velocity of an object changes by every second

Question 4

formula for acceleration

Answer 4

change in velocity/ time taken

Question 5

what is the difference between speed and velocity

Answer 5

Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object’s movement. Put another way, speed is a scalar value, while velocity is a vector.

Question 6

what is deceleration

Answer 6

negative acceleration

Question 7

what is free fall

Answer 7

object falling without air resistance

Question 8

describe acceleration in free fall

Answer 8

all objects will fall with the same acceleration in free fall. this acceleration is g