MID TERM EXAM - PHYSICS FOR ENGINEERING

1. Which of the following is NOT a force?

• Mass

• Weight

• Friction

• Electro Magnetic

If the net force acting on object is zero therefore.

• There are no forces acting on the object.

• All forces acting on the object are balanced

• The object is moving

• None of the above

Which of the following is the natural tendency of objects to resist motion?

• Inertia

• Friction

• Mass

• Weight

An object is accelerated by a net force in which direction?

• At an angle to the force

• In the direction of the force

• In the direction opposite to the force

• Perpendicular to the force

Which of the following charges when an unbalanced force acts on an object?

• Inertia

• Mass

• Motion

• Weight

The weight of a 1 kg. lead is _____ the weight of a 1 kg. of cotton.

• The same as

• Greater than

• Less Than

• All of the above

Friction is a force that _______.

• Opposes motion

• Does not exist when surfaces are very smooth

• Happens only when an object is in motion

• None of the above

Which of the following is not True?

• Friction depends on the force pushing the surface together

• Sliding friction disappears as soon as an object starts moving

• There is a maximum static friction between surfaces

• Sliding friction can cause objects to slow down

A particle is moving in a circle with uniform speed. It has a constant __________.

• Acceleration

• Displacement

• Velocity

• None of the above

A car has an initial velocity of 40 m/s. it stops over a distance of 120 m when the brakes are applied. How long does it take for the car to stop? What is the cars deceleration?

• $6s,\ 6.67\ \frac{m}{s^2}$

• $3s,\ 13.33\ \frac{m}{s^2}$

• $9s,\ 10.02\ \frac{m}{s^2}$

• $12s,\ 13.36\ \frac{m}{s^2}$