Which of the following distinguishes the speed of an object from the velocity?
Question 1 options:
Calculating speed requires knowing distance; calculating velocity does not require knowing distance.
Velocity includes the direction of the motion of an object; speed does not include direction.
Speed includes the time it took the object to travel; velocity does not inculde travel time.
Speed includes the direction of the motion of an object; velocity does not include direction of motion.
Velocity includes the direction of the motion of an object; speed does not include direction.
A train travels a distance of 300 miles in 6 hours. What is the train's average speed?
Question 2 options:
50 miles per hour
50 hours per mile
1800 miles per hour
.5 miles per hour
The train's average speed can be calculated by dividing the distance travelled by the time taken to travel that distance.
Speed = Distance / Time
Speed = 300 miles / 6 hours
Speed = 50 miles per hour
Therefore, the train's average speed is 50 miles per hour.
If a car is moving on a highway at 70 km/hr, going South and then turns to travel 70 km/hr East. What happens to the cars speed and velocity?
Question 3 options:
Speed - changing, Velocity - constant
Speed - constant, Velocity - changing
Speed - constant, Velocity - constant
Speed - constant, Velocity - constant
In this scenario, the speed of the car is constant at 70 km/hr, regardless of the direction it is traveling. However, the car's velocity is changing because velocity includes both speed and direction. Initially, the car is moving south and then it turns to travel east. Therefore, the car's velocity is changing.
So, the correct option is: Speed - constant, Velocity - changing.
The minivan and sedan have a constant velocity because they are going the same speed and the same:
Question 5 options:
units
there is no difference
magnitude
direction
The correct option is: direction.
The minivan and sedan have a constant velocity because they are going the same speed and in the same direction. Velocity is the measurement of an object's speed and direction of motion. In this scenario, both vehicles have the same speed and are moving in the same direction, so their velocity is constant.