Newton's Laws

What causes a moving object to change direction?

• Acceleration

• Force

• Time

• Displacement

What is Inertia?

• Light passing through clear objects

• For every action there is an equal and opposite reaction

• Force is mass times acceleration.

• The tendency of an object to maintain its state of motion

In a game of tug-of-war, a rope is pulled to the left wit ha force of 83 N and to the right with a force of 152 N. What is the magnitude and direction of the net external force on the rope?

• 54 N to the right

• 69 N to the right

• 36 N to the left

• 83 N to the left.

In the free body diagram shown below, what is the gravitational force acting on the balloon?

• 4050 N

• 5120 N

• 1520 N

• 950 N

Tags

NGSS.MS-PS2-4

Find the Magnitude of the net external force and direction acting on the balloon.

• 9337N @ 78 Degrees N of W (Up from left)

• 3294N @ 45 Degrees NW

• 2487N @ 35 Degrees N of W (up from left)

• 1212N @ 62 Degrees N of W (up from left)

A sled is pulled at a constant velocity across a horizontal snow surface. If a force of 95 N is being applied to the sled rope at an angle of 61 degrees to the ground, what is the horizontal force?

• 46 N

• 95 N

• 16 N

• 33 N

Which grouping is field forces?

• Friction and Air Resistance

• Push or a Pull

• Contact Force

• Gravity and Magnetism

The magnitude of the force of gravity acting on an object is...

• 9.81 m/s^2

• Friction

• Weight

• Mass

Tags

NGSS.MS-PS2-4

A net force is acting on an object, then the object is definitely...

• Accelerating

• Moving at a constant velocity

• Standing still

• Balanced Force

A wagon with a weight of 273.5 N is accelerated across a level surface at 0.3 m/s^2. What net force acts on the wagon? (g=9.8m/s^2)

• 8.4 N

• 98 N

• 33 N

• 45 N