Semester 2 Physical Science Study Guide

The ______________ _____________ of an object is defined as the distance traveled divided by the time elapsed.

average speed

Total distance divided by total elapsed time gives what quantity?

average speed

An ball is thrown upward at 5 m/s and is caught when it returns to the release point. Which statement is NOT true

average velocity is zero

Which is NOT a way that Velocity can change?

change in mass

Which of these act as an accelerator in a typical vehicle?

gas pedal

A lion stalks a gazelle from about 20 meters away. Assuming the gazelle has a max acceleration of 3 m/s and the Lion has a max acceleration of 2.8 m/s, we can determine the gazelle will __________________.

live to run another day

The size of a quantity is called:

magnitude

When an object moves from one location to a different location ________________ has occurred.

motion

Moving in 1-Dimension, positions to the left or below the origin would have a __________________ value.

negative

The assigned numerical location of an object relative to a determined origin

position

2-Dimensional position is described with

two coordinates (x,y)

A bungee jumper is moving at 22 m/s initially and 4 seconds later is traveling at - 22 m/s. Did the jumper accelerate?

yes

When the rate of change in Velocity is uniform, the _____________ is uniform as well. (uniform = constant)

Acceleration

A go cart is accelerating at a = -10 m/s. Which of these statements are NOT true of the car.

The go cart is slowing down while traveling to the right The go cart is speeding up while moving south The go cart is in free fall

An object increases its velocity from 13 to 19 meters per minute in 1 second, its acceleration would be

?

Assuming a jet liner can accelerate at a constant acceleration of a = 8.2 m/s, How long will it take to reach take of speed of 88.56 km/hr?

?

A car is moving along a freeway at 100 km/hr north when it approaches an accident it must slam on its brakes. The acceleration provided by the brakes is

Positive and Northward

A ________________ describes size or _______________, but no information about __________________.

Scalar, Magnitude, Direction

A car's __________________ provides ________________ ___________________ by computing average speed over a very short period of time using the circumference of the car's tires divided by the time it takes to complete a single rotation.

Speedometer, Instantaneous Speed