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A 2000 kg car, moving along +X direction with a velocity of 72Km/hr, is made to stop by a force
of unknown force-time profile. The car does not recoil and the collision lasts a time-span of à t =
0.7s.
[a] Find the initial momentum of the car.
[b] Total impulse felt by the car during the collision.
[c] And average force felt by car during the incident. [Use momentum-impulse theorem].
A block of 5.0kg is attached to end of a spring constant 230N/m. The spring mass-system undergoes a simple harmonic motion. At t=0, the position of the block is x=0.23m,and its velocity is v = -5.4 m/s.
What is the angular frequency?
What is the position x as a function of time.(form of x =A sin(wt +0)
A boat moving downstream (with the current) in a river takes 4 min and 7secs to cover
a measured mile according to marks on shore, and 7 min and 30 secs to cover the same
distance moving upstream (against the current). If the boat’s velocity relative to the
water is 11 km/h, what is the velocity of the current in the river?
The makers of a certain automobile advertise that it will accelerate from 15 to 50 mi/hr in 10 s. Assume that
the acceleration is constant, Compute the distance the car travels for a period of 10 sec.
Mario drops his wrench from the top of the BBS building 7.00m from the floor. What is the velocity when it strikes the ground?
An elevator is moving upward at 1.15m/s when it experiences an acceleration of 0.31m/s^2 downward, over a distance of 0.62m. What will be its final velocity?
How do you draw the graph for the same motion?
https://media.discordapp.net/attachments/897567079601950743/898040273353998376/20211013_205120.jpg
A simple machine raises a load of 75kg through a distance of 0.6m. The effort applied to
the machine is 250N and moves through a distance of 18m. Taking g as 9.8m/s²,
determine, The mechanical advantage, The velocity ratio, & The efficiency of the machine.
1, find the value of x,y,z.
2, hence derive an expression relating t, m, l and g
Consider the formula b=ut at, find the dimension of the equation.
With what velocity in m/s must an object be thrown to reach a maximum height of 90.6m? Assume negligible air resistance, indicate proper sign convention
#333702 on Dec 2022