Mechanics | Relativity Answers

The spring balance which will give the most accurate reading on using it in the exp. To establish relationship btw the weight of rectangular wooden block lying on a horizontal table and the force required to just move it should have the least count
B. 5 g weight
D. 0.5 g weight
A. 1g weight
C.2g weight
Ans bhej do plz

A boy throws a ball vertically upward with a speed of 40 m/s and it reaches the maximum height H , If he throws the same ball vertically downward from a height of H with initial speed of 40m/s , The ball will reach ground with speed nearly:

D=5t to the 2nd. Find the distance d in meters that an object falls in a time t of 5 seconds.

A car of mass 1000kg negotiates a banked curve of radius 90 m on a fictionless road. If the banking angle is 45degree, the speed of car is
(1) 5m/sec
(2)10m/sec
(3)20m/sec
(4)30m/sec

a particle moves according to the position function x(t)=ct^2+bt, with c = 2m/s and b= -5m/s. Find the acceleration and velocity when the particle is at the origin.

A car accelerated from 0.0 m/s to 24 m/s at a constant rate in 6.0 s. How far did the car travel between t= 3.0 s and t= 6.0 s ?

A force F acts tangentially at top of a solid sphere of mass M kept on rough horizontal plane. If sphere rolls without slipping, acceleration of its center is: (10F/7M is answer. But dont know how. Please help.)

Represesnt the given velocity 230km/h in the direction 2000

7cm
5cm
14cm
10cm

a body takes time t to reach the bottom of an inclined plane of angle with horizontal. if plane is rough time taken is 2t. what is the cofficient of friction of rough surface.

A mountain-climbing expedition establishes two intermediate camps, labeled A and B in the drawing, above the base camp. (x1 = 10000 m, and x2 = 18000 m.) What is the magnitude Δr of the displacement between camp A and camp B?