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WorksheetsGrade 9 (week 4)
Total questions: 37
Worksheet time: 34mins
A roller coasters accelerates from an initial speed of 6.0 m/s to a final speed of 70 m/s over 4 seconds. What's the acceleration?
24 m/s2
18 m/s2
16 m/s2
16 m/s
A, B, and D
What is happening during point A to B?
not moving
increasing speed at a constant rate
moving at a constant speed
moving at 10 m/s2 acceleration
At what point is the speed the greatest?
C-D
B-C
A-B
D-E
A negative acceleration means that your object is _____.
doing nothing
moving in circles
speeding up
slowing down
What is the difference between speed and velocity?
Velocity includes gravity but speed doesn't
Velocity includes time but speed doesn't
Velocity includes direction but speed doesn't
Velocity includes distance but speed doesn't
What type of speed shows up on your speedometer?
Instantaneous speed
Average speed
Both
Neither
__________ is the speed of an object and the direction of motion.
Displacement
Velocity
Speed
Instantaneous Speed
Hadeel moves from rest till she reach the school with acceleration of 0.01 m/s2 in 3 minutes , what is the final speed of hadeel at the gate of the school ? ............................. Km/h
5.32
6.48
4.68
1.80
Retal moved 6 meters north then she moved 8 meters east , so her displacement = ........................... m northern east.
10
20
15
5
If the distance = 4 t , so the speed = .................... m/s
1
2
3
4
The ( distance - time ) graph that represents the body moves with regular speed is represented by a straight line ............................................
parallel to time axis
passing by origin point
perpendicular on time axis
perpendicular on the distance axis
From the vector physical quantities is .....................................
force
time
mass
distance
Which statement is true about velocity?
Must have measurement of speed.
Must have a measurement of speed and direction.
Must have only direction.
Has neither a measurement of speed or direction.
What is a difference between distance and displacement
Distance is measured in seconds and displacement is measured in meters
Distance is always shorter than displacement
Displacement can be equal to zero if the object ends in the place it began in
Which is a vector?
Displacement
Distance
Speed
Which of the following has INCORRECT units?
speed = m/s
time = s
displacement = m
velocity = s
What is the formula to calculate speed?
Distance / Time
Time / Distance
Acceleration x Time
Force / Mass
What is the unit that measures energy?
Joule
Watt
Ohm
Volt
What is the unit that measures force?
Newton
Kilogram
Meter
Second
It is the regular speed by which the object moves to cover the same distance at the same period of time.
Motion
Average speed
Acceleration
Physical quantity
Complete :
(a) is the length of the shortest straight line between two positions
The shortest length covered by the object in a fixed direction is called
distance
displacement
acceleration
speed
Acceleration is
vector quantity whose unit is m/s
scalar quantity whose unit is m/s
scalar quantity whose unit is m/s2
vector quantity whose unit is m/s2
An object started its movement from rest and its speed changed to 36 km/h. in 10 seconds, calculate the body acceleration and state its type
1 m/sec , it's type accelerating motion
1 m/sec , it's type decelerating motion
1 k.m/h , it's type accelerating motion
1 m/sec2 , it's type accelerating motion
It is an acceleration by which an object moves in a straight line when its speed decreases by equal values through equal periods of tim
Irregular (non-uniform)
Positive uniform acceleration
Regular (uniform) speed
Negative uniform acceleration
It is the rate of change of speed.
Acceleration
Average speed
Relative speed
Scalar Physical quantity
An observer in a moving car with 80 km/h was observing a moving car with 90 km/h in the same direction, so the observed speed of the second car is ................. km/h.
10
170
Complete :
(a) is the speed of a moving object relative to a constant or a moving observer .
