Chapter 11 Velocity Science Study Guide Quiz

What is the difference between speed and velocity?

• The speed and velocity is constantly changing and their is no difference

• Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.

• The speed and velocity stay the same.

• Velocity is the time rate at which an object is moving and Speed is the rate and direction

What is the relationship between velocity and acceleration?

• Acceleration is the rate of change of velocity. (when velocity changes -> acceleration exists) If an object is changing its velocity, i.e. changing its speed or changing its direction, then it is said to be accelerating. Acceleration = Velocity / Time (Acceleration)

• Acceleration is the rate of change of velocity. Velocity is a vector quantity because it consists of both magnitude and direction. Acceleration is also a vector quantity as it is just the rate of change of velocity.

• Acceleration = Velocity / Time (Acceleration)

• Constant Speed= Time / Velocity (Unbalanced)

Significant Digits are used to indicate the _________ of a measurment

• Non-zero digits are always significant.

• Any zeros between two significant digits are significant.

• Accuracy

• A final zero or trailing zeros in the decimal portion ONLY are significant.

A child on a tricycle is traveling at 5 m/s, how long will it take him to travel 45 meters?

• 45/5=9m/s

• 225m/s

• 45/5m/s

• 10m/s

The speed of a race car increases from 50 mph to 100 mph in 2 hours. What is the acceleration of the car?

• 1 m/s2

• 0 m/s2

• 4 m/s2

• 10 m/s2

A frog travels 6 meters the first minute, 4 meters the second minute, 3 meters the third minute and 7 meters the fourth minute. What is it's average speed?

• 21 m/s

• 6/4 m/s /3x7=

• 3.5 m/s

• x/y m/s 504/7 = 72 m/s

How many significant figures are in the measurement 4500

• 4

• 1

• 2

• 3

How many significant figures are in the measurement 178.0006

• 4

• 3

• 7

• 6

How many significant figures are in the measurement .0056

• 1

• 4

• 2

• 6

How many significant figures are in the measurement 5.40

• 3

• 2

• 5

• 1