3rd Balanced and Unbalanced Forces

A box is sitting on the floor. Then, two workers start pushing on the box with the same amount of force. This is shown in the picture above. The arrows, in the picture, show the direction of each force. If the box does not move, what best explains force 1 and force 2?

• A. Force 1 and force 2 are pushing in the same direction.

• B. Force 1 and force 2 are equal in strength.

• C. Force 1 is stronger than force 2.

• D. Force 1 is weaker than force 2.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Evan is pulling his dog in a wagon. As Evan walks to the right, a force pulls on the wagon. In what direction will his dog move?

• down into the ground

• to the right

• up into the air

• to the left

Tags

NGSS.MS-PS2-1

Andy and his friends are playing baseball. They each hit the ball a different distance, shown in the table above. If each child hit the ball from the same place, who most likely hit the ball with the greatest force?

• Andy

• Jill

• Susan

• Mike

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

A ball is rolling down a hill. Which action would slow the ball down?

• adding another force in the same direction

• rolling another ball down the hill

• adding a force in the opposite direction

• reducing the amount of friction

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Mark threw the javelin 4 times. The table above shows the distance the javelin traveled each time. If the distance that the javelin traveled was greater when Mark threw the javelin with more force, which time did Mark throw the javelin with the most force?

• throw 3

• throw 2

• throw 1

• throw 4

Tags

NGSS.MS-PS2-2

Oliver and his older brother like to play pool together. When Oliver takes a shot, the cue ball will barely go far enough to hit another ball on the other end of the table. But when Oliver's brother takes a shot, the cue ball hits another ball and makes it cross the table. Why is this?

• There is no reason

• Oliver's brother can shoot with greater force

• Oliver's brother is taller.

• Oliver can shoot with greater force.

Tags

NGSS.MS-PS2-2

An object is moving in a straight line. If an unbalanced force acts on the object, what could happen to the object's motion? Select EACH correct answer

• The object could continue moving in a straight line

• The object could begin moving in the opposite direction.

• The object could stop moving completely.

Tags

NGSS.MS-PS2-2

Which of these can cause an object to change direction?

• balanced forces

• no force

• a force in the direction the object is moving

• an unbalanced force

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

Kayla and Thomas are playing tug of war. Both children begin pulling at the same time, but after a few moments, Kayla is pulled over the crossing line. Which of these explains why Kayla is pulled over the crossing line?

• Neither Kayla nor Thomas are pulling with any force.

• Thomas is pulling with more force than Kayla.

• Thomas and Kayla are pulling with the same amount of force.

• Kayla is pulling with more force than Thomas.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Kyle and Jon are both pushing the same box. Kyle is pushing to the right. Jon is pushing to the left. Which of these would make the box move to the left?

• Kyle and Jon both stop pushing the box.

• Jon pushes the box with more force than Kyle.

• Kyle pushes the box with more force than Jon.

• Jon and Kyle push the box with the same amount of force.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2