Download Review for Test For the following diagrams calculate the net force

Review for Test
For the following diagrams calculate the net force. Be
sure to indicate the magnitude and direction of the
net force.
Skateboard
Net F Y : __________
Net F X : __________
Is the skater speeding up, slowing down or
moving at constant velocity? ________________
How do you know? ________________________
________________________________________
Draw and label a force diagram representing a
hockey puck moving across the ice to the right.
The hockey puck has a weight of 10 N and a
friction force of 20 N.
Situation A
Net F Y : _________
NetF X : __________
Situation B
Net F Y : _________
Net F X : _________
Puck
Net F Y : __________
Net F X : __________
Situation C
Net F Y : _________
Net F X : _________
Situation D
Net F Y : _________
Net F X : _________
Is the puck speeding up, slowing down or
traveling at a constant velocity? ______________
How do you know? _______________________
________________________________________
______________________________________
Situation A
Situation B
20,000N
20,000N
15,000N
25,000 N
Situation C
Jet Plane
F Y : __________
F X : __________
Read each FBD above. 1st line-determine the net
force. 2nd line-describe the motion of the object.
Situation A
Situation B
_________________ _________________
_________________ _________________
Situation C
_________________
_________________
Is the plane’s elevation (height) changing? _____
Why?
Is the plane accelerating or moving at a constant
velocity? _____
Why?
Draw a FBD and determine the Net Force on the object in each situation below.
1) You push a 85N box across the floor to the left with a 20N force. The force of friction is 4N.
Net Force: _____________
2) Joe pushes on the right side of the 230N boulder with a 75N force while Steph pushes on the left side of
with a 83N force.
Net Force: ____________
3) Kate puts up a tire swing in her yard. The tire weighs 120N.
Net Force: ____________
4) An air hockey puck glides across the table at a constant velocity. The puck weighs 0.002N.
Net Force: ____________
Complete the following showing 3 step math. a = F / m Weight = W = m g
1) An unbalanced force of 25.0N acting in an easterly direction is applied to a 12.0kg mass. What will be the
acceleration of the mass?
2) An object moving with a constant velocity has an unbalanced force applied to it. If the acceleration is
14m/s2 and the mass of the object is 3.75kg, what is the force acting on this object?
3) A racing car undergoes a uniform acceleration of 8.00m/s2. If the unbalanced force causing the
acceleration is 6,000N, what is the mass of the racing car?
4) An economy car has a mass of 800kg. What is its weight?
5) A 7.5kg object is placed on a spring scale on the surface of the planet Nerdo. If the spring scale reads
78.4N, what is the acceleration of gravity on Nerdo?
6) A car has a mass of 1200.0kg. How much would the car weigh on the moon where the gravitational
acceleration is 1.60m/s2?