Velocity quiz pdf

How far has she traveled if she cycles for 4 hours? Alan rides his bike km in 5hrs. What two measurements are necessary for calculating speed?

What is required to observe motion? Acceleration is. The rate at which velocity changes. What is the average speed of a person who swims m in 70s? What is happening to the gravitational forces in the picture of yellow marbles?

The gravitational force decreases as the mass of an object increases. The gravitational force increases as the objects get closer together. The gravitational force decreases as the distance increases. What was the question for Warmup 46? How does mass impact the force of gravity?

How does distance impact the force of gravity? How does time impact the force of gravity? How does speed impact the force of gravity? How does velocity impact the force of gravity? What is the answer for Warmup 49? Yes, if there is a change in direction, there is Acceleration. No, you can't have constant speed while accelerating. Quizzes you may like. Force and Motion.

The relative velocity of two objects moving in the same direction is given by:. Since car A and B are moving with the same velocity hence the distance between them will remain the same and the relative velocity of car C will be equal to the ratio of distance covered and time is taken.

Let us consider two objects, X and Y are moving with velocities V 1 and V 2 with respect to a common stationary frame of reference, say the ground, a tree or a fixed platform. The distance between any two things in space can be calculated by the concept of relative velocity. Additional Information. Start Learning. Answer Detailed Solution Below Option 3 : will fall back into his hand.

It is a vector quantity. So during the whole flight of the coin, the relative velocity in the horizontal direction between the man the coin is zero because the horizontal velocity of the man and the coin is equal. So the coin will fall back into his hand. Hence, option 3 is correct. Answer Detailed Solution Below Option 3 : 2v.

CONCEPT : Relative velocity : The concept of relative velocity occurs when we encounter occasions where one or more objects move in a frame which is non-stationary concerning another observer where the relative velocity is the velocity of an object or observer B in the rest frame of another object or the observer A. Get Started for Free Download App. Concept: The concept of relative velocity occurs when we encounter occasions where one or more objects move in a frame which is non-stationary concerning another observer where the relative velocity is the velocity of an object or observer B in the rest frame of another object or the observer A.

Answer Detailed Solution Below Option 2 : 2v. The correct answer is B. This is true even when an object is thrown upward or has zero velocity. The direction of velocity and acceleration for a ball thrown up in the air. At the highest point in its trajectory , the ball has zero velocity , and the magnitude of velocity increases again as the ball falls. The rock reaches the ground 10s after it is thrown.

Key Points Speed is a scalar quantity. Velocity is a vector quantity and therefore can be n egative, depending upon the coordinate system you use. Answer Detailed Solution Below Option 3 : 52 km towards positive x direction. Hence option 4 is correct. Answer Detailed Solution Below Option 2 : It means that motion is independent of the frame of reference. It means that motion depends on the frame of reference selected.

It means that motion of any object is described relative to the motion of Earth. All of the above are correct answers. Answer Detailed Solution Below Option 2 : It means that motion depends on the frame of reference selected. Generally, when we measure the velocity of an object, the reference frame is taken to be the ground or the earth. According to him, you are not moving. So, the motion observed by the observer depends on the location reference frame of the observer.

This type of motion is called relative motion. It means that motion is relative to the motion of the reference frame. So the correct answer is option 2.