3.3 Average and Instantaneous Acceleration

Acceleration as the slope of a velocity-time graph and as the derivative of a velocity function, including when it opposes the motion.

University Physics Volume 1, 3.3 Average and Instantaneous Acceleration

Status

FlagsLoading your progress…

7 exercises

3.3 Exercise 1

Protons in a linear accelerator are accelerated from rest to $2.0 \times 10^{7} \text{m}/\text{s}$ in 10^–4 s. What is the average acceleration of the protons?

2.5

3.3 Exercise 2

An airplane lands on a runway traveling east. Describe its acceleration.

2.5

3.3 Exercise 3

Is it possible for speed to be constant while acceleration is not zero?

2.5

3.3 Exercise 5

Give an example in which velocity is zero yet acceleration is not.

2.5

3.3 Exercise 7

Plus and minus signs are used in one-dimensional motion to indicate direction. What is the sign of an acceleration that reduces the magnitude of a negative velocity? Of a positive velocity?

2.5

3.3 Exercise 8

A cheetah can accelerate from rest to a speed of 30.0 m/s in 7.00 s. What is its acceleration?

2.5

3.3 Exercise 12

Assume an intercontinental ballistic missile goes from rest to a suborbital speed of 6.50 km/s in 60.0 s (the actual speed and time are classified). What is its average acceleration in meters per second squared and in multiples of g (9.80 m/s²)?

2.5