# SAT Problems - Newton's Laws

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### SAT Problems - Newton's Laws

1. A particle is moving with a constant velocity, v. One or two forces are applied to the particle, as shown in the figures below. In which of the cases below, the forces applied do not change the speed of the particle?
a)
b)
c)
d)

2. An object of mass m = 20kg is pushed by four forces: East by a 10N force, West by a 30N force, South by a 20N force and North by a 20N force, What is the magnitude of the acceleration of the object?
a) .5m/s2
b) 1m/s2
c) 2m/s2
d) 10m/s2
e) 15m/s2

3. Two forces F1 and F2 act on a block of mass m = 5kg, as shown in the figure below. What is the acceleration of the block if the friction between the surface and the block is negligible?

a) .5m/s2
b) 1m/s2
c) 2m/s2
d) 5m/s2
e) 10m/s2

4. Two forces F1 and F2 act on a particle as shown in the figure below. What is the orientation of the acceleration of the particle?

a) same orientation as F1
b) same orientation as F2
c) same orientation as the x axis
d) same orientation as the y axis
e) same orientation as the negative -x axis

• Solutions

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