Question 7 (1 point)

Question

Unbalanced forces

a
cause the motion of an object to change.
b
can change an object's speed but not direction.
c
make an object move opposite the applied force.
d
maintain the constant motion of an object.
Question 8 (1 point)
Every few years, sailboats of different countries compete in a race for a trophy called the America's Cup. The boats sail over the same distance. What, besides the distance, is needed to find out the speed of each boat in the race?

a
the time it takes each boat to finish the race
b
the skill of the crew of each boat in the race
c
the speed of the wind during the race
d
the size of each boat in the race
Question 9 (1 point)

Answer 1

When the speed of an object increases, which of the following is true?

a
The object's velocity increases.
b
The object's acceleration decreases.
c
The magnitude of the object's net force decreases.
d
The object's mass decreases.

Answer 2

so what is it?

Answer 3

The correct answer is (a) The object's velocity increases.