1. How will an object at rest be affected if multiple forces working on it are opposed but unbalanced?

Question

A) The mass of the object will decrease.
B) The unbalanced forces will cause the object to produce a humming sound.
C) The acceleration of the object will increase.
D) Motion will be either created, stopped or changed.

2. A blue car weighing 1,302 kg is accelerating forward at a rate of 4 m/s2. What is the forward force of the car?
A) 1,298 N
B) 5,208 N
C) 1,306 N
D) 325.5 N

Answer 1

1. The correct answer is D) Motion will be either created, stopped or changed. When multiple opposing but unbalanced forces act on an object at rest, they can result in a net force that might cause the object to accelerate in the direction of that unbalanced force.

2. To find the forward force of the car, you can use Newton's second law of motion, which states that Force (F) = mass (m) × acceleration (a).

Given:

• Mass (m) = 1,302 kg
• Acceleration (a) = 4 m/s²

Calculating the force: F = m × a = 1,302 kg × 4 m/s² = 5,208 N

The correct answer is B) 5,208 N.