Vocabulary
A push or pull (a strength) exerted upon an object.
What is force?
This is the equation for acceleration
What is
a = v2 - v1 / t
Scientists measure weight in these units
What are newtons?
3 forces that affect Earth and objects on Earth
What are wind water and ice?
One person pushes a box while another pulls it. The push and pull of the box is an example of this.
What is force?
The strength required for physical or mental activity; the vitality needed to do work.
What is energy?
The equation for work
What is
W = F x d
(Work is calculated by multiplying the force of an object by its amount of movement)
The vector sum of all the forces acting upon an object
What is net force?
This happens to an object's motion when an unbalanced force (net force) acts upon it
What is a change in speed or direction?
It took a ball rolling northwest at 9 mph 15 seconds to roll down a 17 meter hill. Using this information, someone could find the ________ of the ball.
What is velocity? (d / t + direction)
Activity involving mental or physical effort done in order to achieve a purpose.
What is work?
Equation for time
What is
t = v2 - v1 / a
THIS is a force of attraction which pulls us towards the center of the Earth, and therefore keeps us from floating away
What is gravity?
If effort is applied and nothing moves, THIS is not done.
What is work?
A person throws a ball up into the air, and after reaching its maximum height, the ball comes back down to Earth. This is due to THIS force.
What is gravity?
The property of matter by which it retains its state of rest or its velocity along a straight line so long as it is not acted upon by an external force.
What is inertia?
Formula for speed
What is
S = d/t
True or false: The position of an object is its location in relation to other objects or materials
What is TRUE?
Work is measured in these units
What are joules?
True or false: If I gave you the time it took for a certain object to travel a certain distance, you would not be able to tell me the speed of the object that traveled.
What is FALSE? (s = d/t)
The action or process of moving or of changing place or position; movement.
What is motion?
Equation for velocity
What is
v = d/t + direction
True or false: If a plane travels 1,234 miles in 10 hours, the plane traveled at 123 mph
What is FALSE? (It traveled at 123.4 mph)
This occurs when a force resists the relative motion between two objects or materials
What is friction?
A ball is resting on a flat surface with no intention of moving any time soon. The ball will remain at rest unless acted upon by a force. This is an example of _______.
What is inertia?