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Chapter 2: Q3. (page 41)

If one object has a greater speed than a second object, does the first necessarily have a greater acceleration? Explain, using examples.

Short Answer

Expert verified

No, because there is no relationship between the magnitude of speed and the magnitude of acceleration.

Step by step solution

01

Step 1. Meaning of acceleration

Acceleration is the rate at which an object changes its velocity. It has both direction and magnitude, and its value can be positive, negative, or zero.

02

Step 2. Examples for explaining the given condition

An object can have a large speed with constant velocity. In this case, its acceleration remains zero. An object can also have a small speed but with gain. In this case, its acceleration is positive.

Here, the object with the greater speed has lesser acceleration.

Consider two objects are dropped from rest at different times. By ignoring air resistance, the object dropped first has a greater speed than the second one, but both have the same acceleration.

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Most popular questions from this chapter

The best rebounders in basketball have a vertical leap (that is, the vertical movement of a fixed point on their body) of about 120 cm. (a) What is their initial 鈥渓aunch鈥� speed off the ground? (b) How long are they in the air?

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