Question

help kro please
jldio​

Answer 1

The forces are the weight, drag, and lift. Lift and drag are actually two components of a single aerodynamic force acting on the ball. Drag acts in a direction opposite to the motion, and lift acts perpendicular to the motion

Answer 2

a.) Muscular force is a contact force.

Muscular force is a contact force. Electrostatic force is non contact force. Contact Forces: A force which can be applied only when it is in contact with an object is called a contact force.

b.) Electrostatic forces.

Electrostatic forces are non-contact forces; they pull or push on objects without touching them. Rubbing some materials together can result in something called 'charge' being moved from one surface to the other. Charged objects pull on other uncharged objects and may either push or pull on other charged objects.

c.) 1. If friction were absent, we would not be able to walk.

2. Friction is necessary to burn a matchstick.

3. It is due to friction that we can write on a board by a chalk.

Wear and tear of soles of our shoes is due to friction. When a tyre deflates, it is difficult to move the vehicle because of increased friction between the tyre and the road surface. ... The coefficient of friction determines the “stickiness” between two objects.

d.) rolling < sliding < static

Explanation:

Hope this answer will be helpful..