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A man is running with 6m/s with his umbrella held vertically. If he doubles his speed he holds the umbrella at 30 degree with vertical.find the speed and direction of rain
A car travells moves a distance of 200m.it cover first half distance at speed 40km/h and second half at speed of v km/h.calculate average speed of car
a tennis ball “A” is released from rest down a 10.0 m long inclined ramp with a uniform acceleration of 5.0 m/s2. Another tennis ball “B” is initially located at the same height as ball “A” right above the lower edge of the ramp. Ball “B” is thrown upward with some initial speed at the same instant as the release of ball “A”.
a) What was the initial velocity of ball "B" so that "A" and "B" reach the bottom of the ramp at the same time?
b) Sketch position and velocity time graphs for ball "A" and "B" using the same chart.
a tennis ball “A” is released from rest down a 10.0 m long inclined ramp with a uniform acceleration of 5.0 m/s2. Another tennis ball “B” is initially located at the same height as ball “A” right above the lower edge of the ramp. Ball “B” is thrown upward with some initial speed at the same instant as the release of ball “A”.
a JetSki initially travelling at 6.4m/s [W35N] soon accelerates at a rate of 2.2m/s^2 [S] for four seconds. Calculate the final velocity of the Chesky
(a) In the same diagram construct two graphs showing the upward forces FA and FB exerted on the beam at points A and B, as functions of the coordinate x of the boy. Let 1 cm = 100 N vertically, and 1 cm = 1.00 m horizontally. (b) From your diagram, how far beyond point B can the boy walk before the beam tips? (c) How far from the right end of the beam should support B be placed so that the boy can walk just to the end of the beam without causing it to tip?
A cart is moving on a horizontal track. A heavy bag falls off the cart and moves straight down relative to the cart. Select the correct description of the system of choice.
The system consists of the cart. External forces are exerted on the system, changing the horizontal momentum system.
The system consists of the cart and the bag. External forces are exerted on the system, changing the horizontalt momentum of the system.
The system consists of the cart. No external horizontal forces are exerted on the system, so the horizontal momentum of the system is constant.
The system consists of the cart and the bag. No external horizontal forces are exerted on the system, so the horizontal momentum of the system is constant.
A worker wants to turn over a uniform 1.0x103N rectangular crate by pulling at 30°on one of its vertical sides. The floor is rough enough to prevent the crate from slipping. Calculate the pull that is needed to just start the crate to tip.
#340153 on Dec 2023