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Name two units commonly used to measure force. How are they related?
Are the following statements true or false? Explain your answers using an
example
Applying a force to an object will make it move.
b. To keep an object moving, a force must be applied
c. A force must be applied to change the direction of a moving object.
To tighten the head of a hammer on its
handle, it is banged against a surface as
shown to the right. Explain how Newton's
first law is involved.
How can rolling a bowling ball help you to
determine the amount of matter in the ball?
List at least three parts of an automobile
that are designed to overcome the effects of
Newton's first law. Briefly explain the
function of each
State Newton's second law in words. Write
an equation expressing the law.
Explain how the unit of force used by scientists, the newton, is defined,
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The ballistic pendulum was invented in 1742 by english mathematician benjamin robins. it consists of an initially stationary pendulum that moves after being struck by a bullet, and it is used to measure the original velocity of the bullet. the known variables are the bullet's mass m, the pendulum's mass m, and the height to which the block and bullet swing, determined by the length of the pendulum l and final angle θ. two principles of physics are necessary to solve for the bullet's original velocity. what are these principles? conservation of momentum and newton's third law conservation of energy and conservation of angular momentum grade summary deductions 0% potential 100% conservation of momentum and newton's second law. newton's second law and conservation of angular momentum. conservation of energy and newton's third law conservation of momentum and conservation of angular momentum. conservation of momentum and conservation of energy conservation of energy and newton's second law.

There are weak or strong attractive forces between atoms of liquids with a high viscosity

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.