Which is an example of acceleration? a. pickup driving 30 km in 20 minutes b. ac car slowing down on a sharp curve c. an airplane traveling 450km/hd. an 18 wheeler driving west at 50km/hplz

Definition

Acceleration is the term used to describe an object that is either speeding up or slowing down.

Explanation

Based on the given answer choices, answer choices A, C, and D does not describe an object either gaining speed or losing speed; however, object B states this. For this reason, answer choice B is the correct answer.

Answer

b. ac car slowing down on a sharp curve

the inner core.

good luck: )

klicker

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft