A 900 kg car is sliding down a hillside after the handbrake is disengaged. The hill has a height of 20 m and a 200kg box is placed at the bottom. At what velocity will the car hit the box? What velocity will the box and car have if the collision is perfectly elastic? At what rate is the box moving away from the car, as observed by the driver? Answers: 19 81m. 12 61m. 32 42m. 19 81m

A 900 kg car is sliding down a hillside after the handbrake is disengaged. The hill has a height of 20 m and a 200kg box is placed at the bottom. At what velocity will the car hit the box? What velocity will the box and car have if the collision is perfectly elastic? At what rate is the box moving away from the car, as observed by the driver? Answers: 19 81m. 12 61m. 32 42m. 19 81m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

PROBLEM 1: A SUV and a mini bus are travelling in the same direction at the same speed of 70 kph on a level road. The SUV is 150 m ahead of the mini bus. The SUV decelerates at the rate of 2 m/s². From this instant up to the time B overtakes A, how far has B traveled? Ans. 238. 14m
A box is released from rest at the position shown. Determine its speed (m/s) after traveling 4.9s along the 28.3ᴼ inclined surface if the coefficient of kinetic friction between the box and the surface is 0.44. Round off only on the final answer expressed in 3 decimal places.
Situation 3. A road having a radius of 120m and has angle of 9.31 degrees from the horizontal. The center of gravity of the car is located 0.80m above the roadway and the distance between the two front wheels is 1.20m. If the car has a total weight of 15 KN, a. Compute the normal acceleration and the velocity of the car before overturning. b. If uk= 0.60, what is the velocity of the car without sliding? Please answer this with a complete solution and with a Free Body Diagram PLEASE. Thank you.
Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver of B suddenly applies the brakes, causing his car to decelerate at 12 ft/s^2 . It takes the driver of car A 0.75 s to react (this is the normal reaction time for drivers). When he applies his brakes, he decelerates at 19 ft/s^2. Determine the minimum distance d between the cars so as to avoid a collision.
4. An iPhone is thrown vertically upward and returns to earth in 10 sec. How high did go (in m) and what was the initial velocity (in m/s)?
A 900-kg car travelling east at 15.0 m/s collides with a 750-kg car travelling north at 20.0 m/s The cars stick together. Assume that any other unbalanced forces are negligible What is the change in momentum of the colliding bodies? What is the speed of the wreckage just after the collision? In what direction does the wreckage move just after the collision?
Situation 03. A road having a radius of 120m and has an angle of 9.31° from the horizontal. The center of gravity of the car is located 0.80m above the roadway and the distance between the two front wheels is 1.20m. If the car has a total weight of 15KN, a. Compute the normal acceleration and the velocity of the car before overturning. b. If = 0.60, what is the velocity of the car without sliding? %3D
Car B weighing 3200 lb and traveling west at 30 mi/hr collides with car A weighing 3400 lb and traveling north at 20 mi/hr as shown below. If the two cars become entangled and move together as a unit after the crash, compute the magnitude of their common velocity after the impact and the angle made by this velocity vector with the north direction. 30 mi/hr W B 20 mi/hr A
An accelerometer C is mounted to the side of the roller-coaster car and records a total acceleration of 3.9g as the empty car passes the bottommost position of the track as shown. If the speed of the car at this position is 205 km/h and is decreasing at the rate of 16 km/h every second, determine the radius of curvature p of the track at the position shown. Answer: p= i m 0.65 m
PROBLEM 2 A driver is driving at an initial speed of 40 kph. At the back of his truck is a mounted container that is filled with 1.8 m of water. The container is 6 m long, 2 m wide, and 2 m high. The water container is covered with a rubber tarpaulin. After 20 minutes of driving at constant speed, three things happen: (1) The rope of the tarpaulin at the rear end of his truck unravels, causing the back portion of the water surface to be exposed to the atmosphere. He is unaware of this. (2) He sees a van ahead on the road. Ever so inspired by Fast and Furious, he overtakes the van, and at 4 seconds, increases his speed to 72 kph. (3) Upon doing so, the water in his tank partially spills. Poor guy, he is oblivious to the mess, but let's leave it to him to solve that. As for you, dear reader, find the volume of the water spilled, in liters.
Situation 05. In a science experiment, a test object is launched by accelerating it along a 200- meter incline at 1.25 mn/s² starting from rest at the bottom point of the incline (Point Q). The incline is measure 35° from the horizontal, and the instant the object leaves the incline, the gears were turned off. Ignoring air resistance. Compute the maximum height above the ground that the object reaches. b. What is the maximum range of the object beyond Point Q? a.
A ball is thrown with an initial velocity of 100 ft/s upward at 60° with the horizontal. When the range is 5Oft from its original position, compute the normal acceleration of the ball and its radius of curvature.