Terms in this set (14) How can a small force impart the same momentum to an object as a large force? Impulse is the product of force and time. A large force applied for a short period of time can produce the same momentum change as a small for applied for a long period of time.
Q. Why must an object at rest have either no force or a minimum of two forces acting on it?
Because there is no net force acting on an object in equilibrium, then from Newton’s first law of motion, an object at rest will stay at rest, and an object in motion will stay in motion. Because the net force is equal to zero, the forces in Example 1 are acting in equilibrium.
Table of Contents
- Q. Why must an object at rest have either no force or a minimum of two forces acting on it?
- Q. What do you call a force that keeps an object at rest?
- Q. Can a small object and a large object have the same momentum?
- Q. What is the momentum of a 1.5 103 kilogram van that is moving at a velocity of 32 meters second?
- Q. What is average retarding force?
- Q. Can a net force be negative?
- Q. What does retardation mean in physics?
Q. What do you call a force that keeps an object at rest?
Inertia is the property of a body to remain at rest or to remain in motion with constant velocity. Some objects have more inertia than others because the inertia of an object is equivalent to its mass.
Q. Can a small object and a large object have the same momentum?
An object that has a small mass and an object that has a large mass have the same momentum. Since the kinetic energy of an object is momentum times of speed. Therefore, for the same momentum, the mass of higher speed will have more energy i.e. the smaller mass.
Q. What is the momentum of a 1.5 103 kilogram van that is moving at a velocity of 32 meters second?
Physics. What is the momentum of a 1.5 × 103 kilogram van that is moving at a velocity of 32 meters/second? Momentum = 1.5*10^3 * 32 = 4.8*10^4.
Q. What is average retarding force?
A retarding force causes the acceleration of an object to be negative. In F=ma , where F is the resultant force, the force acts against the direction of the object’s current velocity is the retarding force. Formula used: F=ma and F=ma,a=vt. A retarding force causes the acceleration of an object to be negative.
Q. Can a net force be negative?
Forces can be positive or negative. And forces which are aimed to the left are usually said to be in a negative direction. So, to be more accurate, in the above diagram we should call F1 a negative force, that is, negative 20 Newtons, and we should call F2 a positive force, or positive 18 Newtons.
Q. What does retardation mean in physics?
Retardation is nothing but a negative acceleration. The velocity of the body may either increase or decrease. The change in velocity is known as acceleration. Retardation is acceleration with a negative sign. Or the negative value of acceleration shows that the velocity of a body is decreasing.
