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County School District]
Describe the forces used to move a heavy object across the
room.
What would happen
to the motion of the planets if the Sun were to lose its gravitational pull?
Determine the weight of a 1,000 kg elephant whose mass is
1,000 kg.
a.
102
b.
1,000
c.
2,200
d.
9,800
Warm up: Carl and Juan were playing catch, getting ready for
the start of the baseball season. Carl,
who wanted to be a pitcher, was trying out his pitching arm. “Here comes a fast ball,” shouted Carl. “Ouch,” yelled Juan. “That ball really hurt when I caught
it.” All but one answer explains, in
part, why the fast ball hurt Juan’s hand.
a. Greater acceleration means greater force was
used to throw the baseball
b. Greater acceleration means greater
force needed to stop the baseball
c. It takes more forced to stop a fast
ball than it does a slow ball.
d. As the fastball accelerated, the
force on the ball increased.
You know the amount of unbalanced force acting on an object
and the mass of the object. Using
Tamika
inflates and ties off a balloon in her classroom and then takes it outside on a
cold, winter day. Immediately, she notices that the balloon has gotten a
little bit smaller. Why does this occur?
Scout feels ill one day before school. Her mother puts a
thermometer in her mouth and the temperature begins to climb to 100°F. What is happening between the cooler
thermometer and Scout’s body?
a.
Scout’s
body is applying a force tot eh particles in the thermometer.
b.
Kinetic
energy is being transferred from her mouth to the thermometer.
c.
Potential
energy is being lost by the thermometer and gained by Scout’s body.
d.
The
potential energy stored in foods is converted to mechanical energy to raise the
mercury in the thermometer.
The
graph represents the distance a car travels over time while on the highway.
What is the average velocity of the car?