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WorksheetsMotion for Grade 9
Total questions: 12
Worksheet time: 18mins
Select all that apply
v = ___________
t2πr
ut +2 1at2
at
tv
A particle experiences constant acceleration for 20 seconds after starting from rest. If it travels a distance s1 in the first 10 seconds and distance s2 in the next 10 seconds, then
s2 = s1
s2 = 2s1
s2 = 3s1
s2 = 4s1
Is Magnitude of velocity Speed?
Yes
No
Assertion- A body cannot have zero velocity while having acceleration
Reason - Acceleration can only be zero in constant velocity
Assertion and reason are true and reason is the correct explanation of assertion
Assertion and reason are true and reason isnot the correct explanation of assertion
Assertion is true but Reason is false
Assertion is false but Reason is true
Both are false
A particle moves in a straight line. For half of the time it travels at v1 velocity and for the other half it travels at v2. The average velocity is
22v1v2
2v1 − v2
v1+ v2
2v1 + v2
m is the SI unit of _______________ and ______________ ( separated by comma)
(a)
s − 21 at2 =
(a)
The SI unit of angular velocity is
(a)
A boy wants to walk 5 km in 45 mins . He is walking around a circular park with diameter 210 m . Find out how many rounds of the park does he have to take and what should be his average speed?
A racing car reaches a speed of 50 m/s. At this instant it begins a uniform negative acceleration using a parachute and a braking system and comes to rest 50 s later. How far does the car travel after acceleration starts. ( show calculation use '^' for raised to the power and DON'T PRESS ENTER)
A train is moving with a velocity of 50 m/s. The driver presses the brake and causes a retardation of 10m/s2. Calculate :
The time to stop and the distance covered before stopping( show calculation use '^' for raised to the power and DON'T PRESS ENTER)
Tommy travels around a circle with radius 70 m. He takes 50 secs for the journey. Later he travels from point A to point B where distance is twice of the the circumference of the circle. Find out what was his acceleration while traveling along the line
