Motion, Speed and Velocity
True or False: The rate at which velocity or direction changes is the best way to describe acceleration.
What is True.
What is the sum of all the forces acting on an object.
A 75 kg person pushes a 15 kg box with a force of 20 N to the right. What is the acceleration of the box? Round to the nearest tenth.
What is 1.3 m/s2
What is the equation to calculate weight.
What is W = m*g
Define a Force.
What is a push or pull on an object.
Forces that are opposite in direction and are equal in size are called what?
What are balanced forces.
A force of 75 N acts upon a 15 kg block. Calculate the acceleration of the object.
What is 5m/s2
Define Terminal Velocity.
What is the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.
Which of the following is NOT a type of motion, Linear, Rotational, Balanced or Oscillatory.
What is Balanced.
What is Newton's 1st Law.
What is a body at rest will remain at rest and a body in motion will remain in motion unless it is acted upon by an external force.
An 105 kg elephant pushes a 10 kg tree with a force of 45 N to the right. What is the acceleration of the elephant? Round to the nearest tenth!
What is 0.4 m/s2
Define Orbital Motion
What is the curved path that objects take around another object due to the force of gravity.
What is the formula to describe acceleration?
What is:
a = (Vf - Vi)/t
What law states F=m*a
What is Newton's 2nd Law.
A force of 120 N is applied to an object that accelerates at a rate of 8 m/sec 2 . What is the mass of the object?
What is 15 kg.
True or False: A planet's orbital speed changes, depending on how far it is from the sun.
What is True.
Mr. LeQue rides his mini bike Northwest for 150 meters. It took him 7 seconds to get there. What was his velocity?
What is 21.4 m/s to the Northwest.
The example of jumping off of a boat onto a dock is an example of what law?
Newton's 3rd Law.
A force of 2140 N is applied to an object that accelerates at a rate of 23 m/sec 2 . What is the mass of the object? Round to the nearest whole number.
What is 93 kg.
True or False: Increasing the distance away from the sun decreases the amount of time it takes for the planet to complete one revolution around the sun.
What is False.