Posted: April 4th, 2022

Force, Mass and Acceleration Homework Packet

Name Hour DateForce, Mass and
Acceleration Homework PacketQuestions 1-2 refer to a toy car that can move in either
direction along a horizontal line (the + position axis)..jpg">
Assume that friction is so small that it can be ignored. A
force toward the right of constant magnitude is applied to the car.1. Sketch on the axes below using a solid line
the shape of the car’s acceleration—time graph..jpg">2. Suppose that the
mass of the car were twice as large. The same constant force is applied to the
car. Sketch on the axes above using a dashed line the car’s acceleration—time
graph. Explain any differences in this graph compared to the car’s
acceleration—time graph with the original mass.3. When a force is
applied to an object with mass equal to the standard kilogram, the acceleration
of the mass is 3.25 m/s2. (Assume that friction is so small
that it can be ignored.) When the same magnitude force is applied to another
object, the acceleration is 2.75 m/s2. What is the mass of this
object? What would the second object’s acceleration be if a force twice as
large were applied to it? Show your calculations.4. Given an object
with mass equal to the standard kilogram, how would you determine if a force
applied to it has magnitude equal to one newton? (Assume that frictional forces
are so small that they can be ignored.)In Question 5, assume that friction is so small that it can
be ignored.5. The spring scale
in the diagram below reads 10.5 N.
If the cart moves toward the right with an acceleration also toward the
right of 3.25 m/s2, what is the mass of the cart? Show your calculations and
explain.
.jpg">In Questions 6 – 8, friction may not be ignored.6. The force applied
to the cart in Question 5 by spring scale F1 is still 10.5 N.
The cart now moves toward the right with a constant velocity. What are
the magnitude and direction of the frictional force? Show your calculations and
explain your reasoning.7. The force applied
to the cart in Question 5 by spring scale F1 is still 10.5 N.
The cart now moves toward the right with an acceleration also toward the
right of 1.75 m/s2. What are the magnitude and direction of the
frictional force? Show your calculations and explain.8. The force applied to the cart by spring
scale F1 is
10.5 N. The cart now moves toward
the right with a constant velocity. The frictional force has the same magnitude
as in Question 7. What does spring scale F2 read? Show your
calculations and explain.
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