Physics
The acceleration of a 4.0 kg box that experiences a net force of -20.0 N (F = ma)
What is -5.0 m/s2?
This happens to the horizontal velocity of a projectile if we ignore air resistance
What is it remains constant?
Charging by friction involves the transfer of these particles
What are electrons?
The net force on a box that is pushed with a horizontal force of 30.0 N to the left and resisted by a friction force of 10.0 N to the right (Fnet = F1 + F2)
What is -20.0 N?
Galileo concluded this about the rate at which objects fall
What is heavy objects fall at the same rate as light ones?
The formula for calculating the vertical components of vector A if it makes a 30o angle with the horizontal
What is A sin 30o?
What is -2.2 X 1011 N?
The most commonly used frame of reference
the Earth
The law of conservation of momentum states this
What is the total momentum of a group of objects remains the same before and after a collision?
The correct order of steps in the scientific method
What is form a hypothesis, design and conduct an experiment, analyze the data, and draw conclusions?
The magnitude of the resultant velocity of a boat that moves 4.0 m/s north relative to the water, while the river flows 3.0 m/s west (a2 + b2 = c2)
What is 5.0 m/s?
The strongest and weakest of the four fundamental forces. in that order
What are the strong nuclear force and gravity?
Power is best described as this
What is the rate of doing work?
This happens to the charges in a conductor at equilibrium
What is they remain stationary?
On a dart board, shots with high precision, but low accuracy would look like this
What is all close together, but far from the bullseye?
The normal force on an object is always in this direction
What is perpendicular to the surface the object is touching?
The average speed of a car that travels 100 meters in 4 seconds
What is 25 m/s?
The percent error of a student measures a block's mass as 55 g when it is actually 50 g [(measured value - actual value)/actual value] x 100%
What is 10%?
The speed of a 4.00 kg object that has accumulated 200. J of kinetic energy [KE = (1/2)mv2)
What is 10.0 m/s?
Increasing the stopping time in a collision will have this effect
What is decreasing the force?
The force of friction between two surfaces depends primarily on these two factors
What are the force pressing the objects together and the coefficient of friction?
When an object is in free fall, this is the only force acting on it
What is gravity?
The difference between a law and a theory
A law describes a set of observations, while a theory tries to explain why they occur?
Electric field lines point in this direction
What is toward negative charges?
The time it takes a rock to hit the ground if it is thrown horizontally from a 44.1 m cliff [d = (-1/2)gt2]
What is 3.00 s?