2. 1D Motion / Kinematics

Intro to Acceleration

Textbook Question
At this instant, the particle is speeding up and curving upward. What is the direction of its acceleration?
791
views
Textbook Question
A sports car moving at constant velocity travels 120 m in 5.0 s. If it then brakes and comes to a stop in 3.7 s, what is the magnitude of its acceleration (assumed constant) in m/s², and in g's (g = 9.80 m/s²)?
892
views
Textbook Question
The position of an object is given by 𝓍 = At + Bt², where 𝓍 is in meters and t is in seconds. What is the acceleration as a function of time?
897
views
Textbook Question
The takeoff speed for an Airbus A320 jetliner is 80 m/s. Velocity data measured during takeoff are as shown. Is the jetliner's acceleration constant during takeoff? Explain.
136
views
Multiple Choice
At a given instant, the acceleration of a certain particle is zero. This means that:
403
views
Multiple Choice
How can you calculate the acceleration of an object if you know its initial velocity, final velocity, and the distance traveled?
334
views
Multiple Choice
If the initial velocity of the bus is 5 m/s, what is the velocity of the bus at t = 3 seconds given that the acceleration is ax(t) = αt with α = 1.15 m/s³?
315
views
Multiple Choice
When striking, the pike, a predatory fish, can accelerate from rest to a speed of 4.4 m/s in 0.12 s. What is the acceleration of the pike during this strike?
298
views
Multiple Choice
When you sneeze, the air in your lungs accelerates from rest to 120 km/h in approximately 0.70 s. What is the acceleration of the air in m/s²?
245
views