Acceleration is _______________.(1 point) Responses An object’s speed in a specific direction An object’s speed in a specific direction An object’s direction’s rate of change An object’s direction’s rate of change An object’s speed when its motion is constant An object’s speed when its motion is constant An object’s velocity is rate of change An object’s velocity
Acceleration is an object's direction's rate of change.
Acceleration is defined as the rate of change of velocity with respect to time. In other words, it is how quickly an object's velocity changes over time.
What do unbalanced forces do?(1 point) Responses Unbalanced forces cannot change an object’s direction. Unbalanced forces cannot change an object’s direction. 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 cause an object’s motion to change. Unbalanced forces cause an object’s motion to change. Unbalanced forces allow an object’s motion to stay the same.
Unbalanced forces cause an object's motion to change.
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?(1 point) Responses The wind’s speed The wind’s speed 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 skill of each boat’s crew
The time each boat takes to get to the finish line.
Which choice represents velocity?(1 point) Responses 35 m/s 35 m/s 15 km/hr west 15 km/hr west 4 g/mL 4 g/mL 12 m/s2
15 km/hr west
The graph below shows a cyclist’s velocity over a period of time. Describe the cyclist’s acceleration. (1 point) Responses The acceleration of the cyclist is constant and non-zero The acceleration of the cyclist is constant and non-zero The acceleration of the cyclist is constant and zero The acceleration of the cyclist is constant and zero The acceleration of the cyclist is going up The acceleration of the cyclist is going up The acceleration of cyclist is going down
