Name _______________________ Date _________
Teacher ____________________ Period ________
Newton’s Laws Worksheet
1.
The net external force on the propeller of a 0.75 kg model airplane is 17N forward. What is the
acceleration of the airplane?
2.
The next external force on a golf cart is 390 N north. If the cart has a total mass of 270 kg,
what are the magnitude and direction of its acceleration?
3.
A car has a mass of 1.50 x 103 kg. What force is required to accelerate the car at 4.5 m/s2 to
the east?
4.
A 2.0 kg mass starts from at the top of an inclined plane 85 cm long and slides down to the
bottom in 0.50 s. What net external force acts on the mass along the incline?
Problems taken and adapted from Holt Physics; Holt, Rinehart, and Winston and
Physics: Principles and Problems; The Glencoe division of Macmillan/McGraw-Hill Publishing Company
5.
A ball pushed with a force of 13.5 N accelerations at 6.5 m/s2 to the right. What is the mass of
the ball?
6.
On Earth, a scale shows that you weigh 585 N.
a.
What is your mass?
b.
7.
What would the scale read on the moon (g = 1.60 m/s2)
Use the results from the example problem on p128 to answer these questions about a scale in
an elevator on Earth. What force would the scale exert when
a.
the elevator moves up at a constant speed?
b.
it accelerates downward at 2.0 m/s2?
c.
it accelerates upward at 2.0 m/s2?
d.
it moves downward at a constant speed?
Problems taken and adapted from Holt Physics; Holt, Rinehart, and Winston and
Physics: Principles and Problems; The Glencoe division of Macmillan/McGraw-Hill Publishing Company