Question

true or false questions 1. A body can have mass, but experience zero weight force. 2....

true or false questions

1. A body can have mass, but experience zero weight force.

2. The force due to air resistance always opposes the direction of motion.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

1. True

Because the weight force of body depends upon the acceleration due to gravity (g). When a body having mass move with an elevator, the body behave as free fall and the weight of body in weighting machine shows zero. Hence weght force of body can be zero.

2. True

The air resistance force often opposes the direction of motion. When an object free fall its speed gets slow down due to air resistance force. The air resistance depends upon two factors such as speed of objects and surface area of the object.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
true or false questions: 1. If a normal force is acting on a body, the normal...
true or false questions: 1. If a normal force is acting on a body, the normal force will never be in the direction that the body is moving. 2. A body can experience a weight force and have no mass. 3. During a one-hour trip, a small boat travels 80.0 km north and then travels 60.0 km east. The average velocity of the boat was 100 km/h. 4. A body undergoing projectile motion will always have a constant acceleration.
During a one-hour trip, a small boat travels 80.0 km north and then travels 60.0 km...
During a one-hour trip, a small boat travels 80.0 km north and then travels 60.0 km east. The average velocity of the boat was 100 km/h. True or false If a body is moving in uniform motion, then there are no external forces acting on the body. True or false The force due to air resistance always opposes the direction of motion. True or false
The Normal force always opposes the Weight force. A.)True B.)False If a ball on a string...
The Normal force always opposes the Weight force. A.)True B.)False If a ball on a string is being spun around in a circle that is perpendicular to the ground, at what point of the ball’s motion is it being pulled on by the rope the hardest? A.)At the bottom B.)At the top C.)45 degrees from top D.)90 degrees from top
Are the following true or false? Please explain why. 1. an object undergoing projectile motion always...
Are the following true or false? Please explain why. 1. an object undergoing projectile motion always has kinetic energy. 2. A static friction force always oppose the direction of motion of the body that it acts on. 3. When a body is moving in uniform circular motion, it has a constant kinetic energy. 4. Energy is neither created, nor destroyed, it is only transformed; unless a non-conservative force acts on the body. 5. A body with mass always experiences a...
true or false: 1-The direction of kinetic friction force is opposite to the motion of the...
true or false: 1-The direction of kinetic friction force is opposite to the motion of the particle. 2-The vertical force on the displacement of the body does not work. 3-The direction of kinetic friction force is in the direction of the particle's motion. 4-Flexibility is the resistance of solid objects to change in shape or size when exposed to stress. 5-Ying's modulus of a substance depends on the type of material only and works in the linear region.
1. Motion of an object depends on its velocity only. True False 2. A car with...
1. Motion of an object depends on its velocity only. True False 2. A car with a mass of 2500 kg is traveling at a speed of 30 m/s due east. Choose the most appropriate answer to its momentum. a. 30 m/s due east b. 30 m/s c. 75,000 kgm/s d. 75,000 kgm/s due east 3. A car is traveling at 70 mph and then is involved in an accident with a head-on collision into a very solid wall. As...
Question 1: Mark True or False beside each statement below: _______(a) The center of mass (gravity)...
Question 1: Mark True or False beside each statement below: _______(a) The center of mass (gravity) of any object must lie on a point within or on the body of each object. _______(b) The torque due to a force is independent of the choice of axis of rotation. _______(c) If the forces on an object balance, then this object cannot experience any rotation. _______(d) If the torques on an object balance, then this object cannot have angular acceleration. _______(e) If...
1) True or false? : The driving force for unsteady state diffusion is a constant mass...
1) True or false? : The driving force for unsteady state diffusion is a constant mass concentration gradient. 2) True of false? Carbon diffuses faster in Cu than in iron.
Find the air resistance acting on a parachuter that jumps from a plane. The mass of...
Find the air resistance acting on a parachuter that jumps from a plane. The mass of the parachuter is 85 kg, the coefficient of shape is 0.88 kg/m^3, and the velocity is 25 m/s. The area facing the direction of the motion is 0.30m^2. Compare the magnitudes of the air resistance and the weight of the parachuter. What is the magnitude and direction of the net force?
1.) Why do some objects fall faster than others near the surface of the earth if...
1.) Why do some objects fall faster than others near the surface of the earth if all mass is attracted equally by the force of gravity? A. Some objects fall faster because of air resistance, which acts in the direction of the motion of the object and exerts more force on objects with less surface area. B. Some objects fall faster because of air resistance, which acts in the direction opposite the motion of the object and exerts more force...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT