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Which situation describes a non-contact force changing the speed of an object?(1 point)

Responses

a drawer opening when a user pulls the handle
a drawer opening when a user pulls the handle

a bicycle accelerating as the rider pedals more quickly
a bicycle accelerating as the rider pedals more quickly

a ball accelerating as it rolls down a hill
a ball accelerating as it rolls down a hill

a gust of wind blowing a leaf away

a gust of wind blowing a leaf away

In which situation would the momentum of a moving object increase?(1 point)

Responses

A force acting in the direction of the object’s motion is removed from the object.
A force acting in the direction of the object’s motion is removed from the object.

Two forces of equal magnitude act on the object in opposite directions.
Two forces of equal magnitude act on the object in opposite directions.

A force acting in the direction opposite the object’s motion is removed from the object.
A force acting in the direction opposite the object’s motion is removed from the object.

A new force acts on the object, opposing the object’s motion.
A new force acts on the object, opposing the object’s motion.
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A force acting in the direction of the object’s motion is removed from the object.

Use the diagram of the pulley system to complete the statement.

An illustration shows a system of two pulleys lifting a block.

In this pulley system, the pulleys will _____ the mechanical force required to lift the block and will change the _____.

(1 point)
Responses

increase; weight of the block
increase; weight of the block

decrease; direction of the force
decrease; direction of the force

decrease; weight of the block
decrease; weight of the block

increase; direction of the force
increase; direction of the force
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decrease; weight of the block

Question

A musician hits a drum with a drumstick. In three to four sentences, explain the collision forces between the drum and drumstick.(4 points)

When the musician hits the drum with the drumstick, there are two main collision forces involved. The first force is the force of the musician's hand pushing the drumstick towards the drum. This force causes the drumstick to accelerate towards the drum. The second force is the force of the drumstick hitting the drum. This force results in the transfer of momentum and energy from the drumstick to the drum, causing the drum to vibrate and produce sound. Overall, the collision forces between the drum and drumstick involve the initial force of impact and the reactionary force involved in producing sound.

simplfiy it

When the musician hits the drum with the drumstick, there are two main collision forces involved. The first force is the musician's hand pushing the drumstick towards the drum, causing it to accelerate. The second force is the drumstick hitting the drum, transferring energy and momentum to create sound. These collision forces involve the initial impact force and the reactionary force producing sound.

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