1. A car going 50mi/h overtakes and passes another car moving at 45mi/h. What length of the road is required for the operation? Assume that each car is 15ft long and that there is a 60ft space between them before and after passing. Taking into account the approach of a car from the opposite direction at 50mi/h, what clear length of the road is required?
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.
1. A car going 50mi/h overtakes and passes another car moving at 45mi/h. What length of the road is required for the operation? Assume that each car is 15ft long and that there is a 60ft space between them before and after passing. Taking into account the approach of a car from the opposite direction at 50mi/h, what clear length of the road is required?
2. Sam heaves a 16-lb shot straight up, giving it a constant upward acceleration from the rest of 41.0 m/s2for 64.0 cm. He releases it at 2.29 m above the ground. Ignore air resistance.
(a) What is the speed of the shot when Sam releases it?
(b) How high above the ground does it go?
(c) How much time does he have to get out of its way before it returns to the height of the top of his head, 1.88 m above the ground?
Step by step
Solved in 2 steps
