Neglecting air resistance, a ball in free fall near Earth's surface will have...
increasing speed and constant acceleration
Does any change in the motion of an object result in an acceleration?
Yes
The basic difference between instantaneous and average speed is that...
average speed is for a total distance over a total time of trip
Which metric unit is used to express a measure of weight?
N (Newtons)
Again consider the small sports car and large SUV that collided head on and stuck together without sliding. Which vehicle must have experienced the larger deceleration during the collision?
The small sports car
From a bridge, a ball is thrown straight up at the same time a ball is thrown straight down with the same initial speed. Neglecting air resistance, which ball will have a greater speed when it hits the ground?
Both balls would have the same speed
If a ball swinging in a circle on a string is moved twice as fast, the force on the string will be...
four times as great
Suppose the mass of a moving scooter is doubled and its velocity is also doubled. The resulting momentum is...
quadrupled
Newton's third law of motion states that forces occur in matched pairs that act in opposite directions between two different bodies. This happens...
every time two bodies interact
Two objects are released from the same height at the same time, and one has twice the weight of the other. Ignoring air resistance...
