1. Acceleration involves a change in ____.
speed
velocity
displacement
direction
2. Which of the following statements about acceleration is true?
Like velocity, acceleration has a direction.
Your acceleration is positive when you speed up.
Your acceleration is negative when you slow down.
all of the above
True or False
3. To find acceleration, subtract the final velocity from the initial velocity and divide by the time.
true
false
4. When you run around a track at 5 km/h, your velocity is accelerating.
true
false
sorry don't know good luck
1: Velocity
2: all of the above
3: false
4: true
1. Acceleration involves a change in velocity.
2. True. Like velocity, acceleration has a direction. Your acceleration is positive when you speed up and negative when you slow down.
3. True. To find acceleration, subtract the final velocity from the initial velocity and divide by the time.
4. False. When you run around a track at a constant speed of 5 km/h, your velocity is not changing, so there is no acceleration.
1. Acceleration involves a change in velocity.
To understand why velocity is the correct answer, we need to know that velocity is a vector quantity, meaning it has both magnitude (speed) and direction. Acceleration, on the other hand, is defined as the rate of change of velocity. So when there is a change in velocity, it implies an acceleration.
2. The statement "all of the above" is true.
Acceleration, like velocity, has a direction. If you speed up, your acceleration is positive, and if you slow down, your acceleration is negative. So all three statements in the options are true.
3. The statement "To find acceleration, subtract the final velocity from the initial velocity and divide by the time" is true.
The formula to calculate acceleration is given by:
acceleration = (final velocity - initial velocity) / time
By subtracting the initial velocity from the final velocity, you get the change in velocity over a certain time period. Dividing this change in velocity by the time will give you the acceleration.
4. The statement "When you run around a track at 5 km/h, your velocity is accelerating" is false.
Velocity is a measure of the rate at which an object changes its position, taking both speed and direction into account. If you run around a track at a constant speed of 5 km/h, your velocity is not changing. In order for you to be accelerating, there needs to be a change in velocity, either in speed or direction.