Velocity occurs when there is a change in direction. In which case is there velocity?
Point E only
Point A only
Point D only
Point B to Point C
Point C to Point A
Which of these is the displacement line?
line C
line A
line D
line B
line E
Question 4
4.
Question 5
5.
Question 6
6.
Question 7
7.
In which cases is there no acceleration (NA), positive acceleration (PA), negative acceleration (NGA), acceleration because of a change in direction (CDA)?
A car makes a right turn at a constant speed.
A biker speeds up from the red light as it turns green.
A biker slows down.
A biker maintains a constant speed of 25 miles per hour
A biker is stopped at a red light.
no acceleration (NA)
negative acceleration (NGA)
change in direction causing acceleration (CDA)
positive acceleration (PA)
According to the video, in which case is there acceleration?
When a plane travels at a constant speed of 1000kmph
When a car travels at a constant speed of 80kmph
None of these cases has acceleration
According to the video at 1.15s- 1.25s, "Acceleration is always related to high speeds"
False
True
According to the video, in which of these cases is there acceleration?
An object is at rest (velocity =0). But then the velocity of the object increases to 20kpmh in 5 seconds.
A body that was heading East at a constant velocity of 30Kmph suddenly curves and goes 30Kmph South.
According to the video, acceleration is a...
scalar
vector
chicken
Delta (Δ) means “______”
change
rate
motion
time
amount
What does ΔV mean?
the change in time
the change in acceleration
the change in velocity
the change in force
In what cases will the velocity of an object change?
when an object is speeding up
when an object is changing direction
when an object is slowing down
If the speed ____ ___ _____ (constant) then there is no velocity and thus no acceleration.
