The average speed of a sports car that races 50 kilometers in 30 minutes on a straight track: A) is 25 km/h B) is 50 km/h C) is 100 km/h D) is 150 km/h
Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.
I need help on these questions
![2.) The average speed of a sports car that races 50 kilometers in 30 minutes on a straight track:
A) is 25 km/h
B) is 50 km/h
C) is 100 km/h
D) is 150 km/h
3.) A ball dropped from a 4-m height accelerates at 10 m/s² and strikes the ground 1 s later. If
the rock is dropped from a height of 2 m, its acceleration of fall is
A) the same
B) half
C) twice
D) four times as much
4.) An aircraft undergoes acceleration when it
A) gains speed
B) loses speed
C) changes its direction
D) all of the above
5.) A jetliner has an airspeed of 800 miles-per-hour. The wind is blowing at 50 miles-per-hour in
the opposite direction. What is its groundspeed?
A) 750 miles-per-hour
B) 900 miles-per-hour
C) 850 miles-per-hour
D) 800 miles-per-hour](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8f295989-0e6d-45c2-9ab7-cdca523774a7%2F289bb689-263e-4a91-80d7-e1636c7a7ffa%2F100kf9_processed.png&w=3840&q=75)
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Given data:
Distance traveled (d) = 50 km
Time (t) = 30 min
Required:
The average speed
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