Physics Chapter 2
When there is no air resitance, objects of different masses dropped from rest
fall with equal accelerations and with equal displacements
Acceleration due to gravity is also called
free-fall acceleration
What is the SI unit of acceleration
m/s2
Which of the following units is the SI unit of velocity
meter per second
If you know the acceleration of a car, its initial velocity, and the time interval, which of the following can you predict
the displacement of the car, the magnitude of the car's final velocity, direction of the car's final velocity
Which of the following line segments on a position versus time graph is physically impossible
vertical line
Acceleration is defined as
the rate of change of velocity
Suppose you are given a position versus time graph. The slope o f a line drawn tangent to a point on the curve of this graph describes what quantity
...
The motion of a ball on an inclined plane is described by the equation Delta x =1/2 a (delta t)2 Which of the following quantities must have a value of zero
...
When a car's velocity is negative and its acceleration is negative, what is happening to the car's motion
...
When a car's velocity is positive and its acceleration is negative, what is happening to the car's motion
...
Which of the following statement applies to the motion of a ball rising and then falling in free fall
...
What is the speed of an object at rest
0.0 m/s
Which of the following situations represents a negative displacement (Assume positive position is measured vertically upward along a y-axis
A cat jumps from a tree limb to the ground
Objects that are falling toward Earth in free fall move
at a constant velocity
A baseball catcher throw a ball vertically upward and catches it in the same spot as it returns to the mitt. At what point in the ball's path does it experience zero velocity and nonzero acceleration at the same time
at the top of its path
Which of the following is the equation for average velocity
V avg = Delta x/Delta t
Which of the following is the equation for acceleration
a= Delta v/delta t
Which would fall with greater acceleration in a vacuum - a leaf or a stone
They would accelerate at the same rate
