Course Code
phy101
Question
The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of
Answer
resolution of forces
Question
Effect of a force on a body depends upon
Answer
all of the above
Question
Forces are called coplanar when all of them acting on body lie in
Answer
one plane
Question
A 2kg box is at the top of a frictionless ramp at an angle of 60o. The top of the ramp is 30m above the ground. The box is sitting still while at the top of the ramp, and is then released. What is the velocity of the box just before it hits the ground?
Answer
32.2 m/s
Question
An object is shot from the ground at 125m/s at an angle of 30o above the horizontal. How far away does the object land?
Answer
1350 m
Question
An object is shot from the ground at 75m/s at an angle of 45⁰ above the horizontal. How high does the object get before beginning its descent?
Answer
140 m
Question
A body moving with uniform acceleration has a velocity of 12.0 cm/s when its x coordinate is 3.00cm. If its x coordinate 2.00 s later is −5.00cm, what is the magnitude of its acceleration?
Answer
-16.0 cm s-2
Question
A football player could routinely kick a ball at a horizontal speed of 160 km/hr. How long did the ball take to reach a point 18.4m away?
Answer
0.414 s
Question
A body moves, from rest with a constant acceleration of 5 m per squared sec. The distance covered in 5 sec is most nearly
Answer
62.5 m
Question
3-vectors are only properly represented
Answer
in a 3-dimensional space
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