A motorcycle goes north at 40 miles per hour. A car goes south at 40 miles per hour on the same street. Which statement is true?

Question

options:
The vehicles have the same speed and velocity.
The vehicles have the same speed and velocity.

The vehicles have the same velocity, but not the same speed.
The vehicles have the same velocity, but not the same speed.

The vehicles are going in opposite directions, so their speed is not the same.
The vehicles are going in opposite directions, so their speed is not the same.

The vehicles have the same speed, but different velocity.

Answer 1

The correct statement is:

The vehicles have the same speed, but different velocity.

Speed is a scalar quantity that only considers how fast an object is moving, while velocity is a vector quantity that takes into account both the speed and the direction of motion. In this case, both the motorcycle and the car are traveling at 40 miles per hour, so they have the same speed, but since they are moving in opposite directions (one north and the other south), they have different velocities.

Answer 2

What do unbalanced forces do?

options:
Unbalanced forces cause an object’s motion to change.
Unbalanced forces cause an object’s motion to change.

Unbalanced forces can make an object move in the opposite direction of the force that is applied.
Unbalanced forces can make an object move in the opposite direction of the force that is applied.

Unbalanced forces cannot change an object’s direction.
Unbalanced forces cannot change an object’s direction.

Unbalanced forces allow an object’s motion to stay the same.

Answer 3

The correct statement is:

Unbalanced forces cause an object’s motion to change.

Unbalanced forces result in a net force acting on an object, which can change its speed, direction, or both. In contrast, balanced forces result in no change in the motion of the object.

Answer 4

In a boat race, the boats all sail the same distance. In addition to the distance covered, what information is necessary to calculate the winner?

options:

The time each boat takes to get to the finish line
The time each boat takes to get to the finish line

Each boat’s size
Each boat’s size

The wind’s speed
The wind’s speed

The skill of each boat’s crew

Answer 5

The correct option is:

The time each boat takes to get to the finish line.

To determine the winner of a boat race where all boats sail the same distance, you need to know how long it took each boat to complete that distance. The boat that takes the least amount of time to finish is the winner. Other factors like the size of the boats, wind speed, or crew skill may influence performance, but the time taken is the essential information for determining the winner.