Calculating Net Force and Acceleration in Physics Problems

This video tutorial covers the calculation of net force in the horizontal direction using physics problems. It explains how to determine acceleration using Newton's second law and solve kinematic problems to find distance traveled. The tutorial also addresses calculating net force when forces are applied at an angle and finding the final speed of an object. Additionally, it includes a problem involving a car's acceleration and the forces acting on it, including friction and engine force.

What is the net horizontal force acting on a 5 kg box pulled by a 200 N force with a 60 N frictional force opposing it?

• 140 N

• 260 N

• 200 N

• 60 N

How do you calculate the acceleration of a box if the net force is 140 N and the mass is 5 kg?

• Divide 140 by 5

• Multiply 140 by 5

• Add 140 and 5

• Subtract 5 from 140

If a box starts from rest and accelerates at 28 m/s² for 15 seconds, how far does it travel?

• 2800 meters

• 1500 meters

• 4200 meters

• 3150 meters

What is the net horizontal force on a 12 kg box pulled by a 350 N force at 30 degrees above the horizontal, with a 120 N frictional force?

• 230 N

• 350 N

• 183.1 N

• 120 N

How do you find the acceleration of a 12 kg box if the net force is 183.1 N?

• Divide 183.1 by 12

• Multiply 183.1 by 12

• Add 183.1 and 12

• Subtract 12 from 183.1

What is the final speed of a box after traveling 200 meters with an acceleration of 15.26 m/s²?

• 50 m/s

• 100 m/s

• 60 m/s

• 78.1 m/s

What is the acceleration of a car that speeds up from 25 m/s to 60 m/s in 5 seconds?

• 12 m/s²

• 5 m/s²

• 7 m/s²

• 10 m/s²

How do you calculate the net force on a car with a mass of 1200 kg and an acceleration of 7 m/s²?

• Multiply 1200 by 7

• Add 1200 and 7

• Divide 1200 by 7

• Subtract 7 from 1200

If a car experiences a frictional force of 3500 N, what is the average force exerted by the engines if the net force is 8400 N?

• 11900 N

• 8400 N

• 3500 N

• 7000 N

What is the net force in the x direction if the applied force is 11900 N and the frictional force is 3500 N?

• 3500 N

• 11900 N

• 15400 N

• 8400 N