Introductory Physics Worksheet With Answers - Mcas Review Packet #1 - Nnhs Page 13
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NNHS Introductory Physics: MCAS Review
Packet #1
1. Motion and Forces
Broad Concept: Newton’s laws of motion and gravitation describe and predict the motion of
most objects.
23.) You place a block on a slide at the park.
24.) An object that you are pushing with a
The block stays at rest on the slide. What force
force of 10 Newtons is sliding at a constant
keeps the block in place?
velocity. What do you know about the friction
A. weight
acting on the object?
B. static friction
A. 10 N of kinetic friction are acting on the
C. kinetic friction
object.
D. normal force
B. 10N of static friction are acting on the
object.
C. Less than 10N of static friction are acting.
D. Less than 10N of kinetic friction are acting.
My Answer and Explanation:
My Answer and Explanation:
B. Normal force and weight are acting
A. The object is moving at a constant
whether the block is at rest or moving.
velocity so the forces on the object
So it must be friction which keeps the
must be balanced. 10N of friction must
block in place. It is specifically static
be balancing your 10N of pushing. And
friction since the block is stationary.
since the box is sliding it is kinetic
Kinetic friction applied to objects that
friction.
are sliding.
Correct Answer and Explanation:
Correct Answer and Explanation:
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