Worksheetsunit 4 review
Total questions: 15
Worksheet time: 4hrs 45mins
Which of the following is the same as a Newton?
kgm/s2
kgm/s
m/s2
m/s
If no net force acts on an object then..
that object's velocity must be constant
the velocity of the object must be zero
the object must be accelerating
The inertia of the object must be increasing
In Newton's first law of motion (law of inertia) the acceleration of the object is always:Hint constant velocity
zero
positive
negative
increasing
which of the following is always true of newton's 2nd law (the law of force and acceleration)
the direction of the net force is perpendicular to the direction of the acceleration
the direction of the net force is opposite the direction of the acceleration
the direction of the net force is opposite to the direction of the velocity.
The direction of the net force is the same direction of acceleration
which of the following statements is true?
Mass is measured in pounds and weight is measured in grams
Mass and weight are both measured in kilograms
Mass and weight are both measured in newtons
Mass and weight are proportional to each other.
For a cannonball fired in space, the net force needed to keep the cannonball is..(the cannonball is at equilibrium)
Zero
Equal to the cannonballs weight
Twice the force with which it was fired
equal the force with which it was fired
if the force acting on a car is doubled the cars acceleration is?
halved
doubled
quadrupled
quartered
Suppose you had a magic football whose mass was increasing, the acceleration of the football after the mass has increased would? (you are applying the same force)
Increase
Decreases
remains the same
gains mass
the acceleration due to gravity on Venus is 9.20 m/s2=g. What is the force of weight of a 50.0 kg astronaut on venus.(g=9.20 m/s2,it is different on venus)
460N
340N
5.4N
500N
A falling stone weighing 80 N encounters 40 N of air resistance.The net force acting on the stone is
40N
-40N
120N
-120N
A force of 50N is applied horizontally to a 15kg box at rest on a table as shown. The force of friction between the table and the box is 10 N and opposes the motion of the box. What is the acceleration of the box?
2.7 m/s2
7 m/s2
10 m/s2
3.3 m/s2
A car of mass 1200 kg travels with an initial velocity of 20 m/s. What is the magnitude of the force needed to bring the car to rest in a distance of 100m (Hint: find acceleration first)
2N
60N
2400N
24000N
