Mechanics | Relativity Answers

The acceleration, a, of an object produced when a force is applied is given by the following formula, where F represents the force acting on the object and m represents the mass of the object.

a=F/m

If a has units of meters per second squared and m has units of grams, what must be the units of F?

A. grams
B. meters per second
C. grams-meters per second
D. grams-meters per second squared

When exploring a planet, it was found that a rock dropped from 2.0 above the planet's surface took 0.50 s to fall to hit the surface. What is the acceleration due to gravity on that planet?

which requires more force to stop if they have the same acceleration : sumo wrestler or fairy? Explain why?

The accelaration of a particle travelling at a speed of 40m/s going ground a curve of radious 16m is

A particle is (X-Y) palne such that it's velocity is given by V=vi+xj where (i and j are vector).the equation of it's trajectory is...

A light spring with force constant 3.35 N/m is compressed by 8.16 cm as it is held between a 0.239 kg block on the left and a 0.478 kg block on the right, both resting on a horizontal surface. The spring exerts a force on each block, tending to push them apart. The blocks are simultaneously released from rest. Find the acceleration with which each block starts to move, given that the coefficient of kinetic friction between each block and the surface is the following values. (Let the coordinate system be positive to the right and negative to the left. Be sure to include the sign to indicate the direction of the acceleration.)

(a) μ = 0
heavier block m/s2
lighter block m/s2

(b) μ = 0.060
heavier block m/s2
lighter block m/s2

(c) μ = 0.137
heavier block m/s2
lighter block m/s2

The Position (x) of a particle moving along a straight line as a function of time (t) is given by x=6+4t-t^2 the distdistance covered by the particle in t=0 to t=3sec is..
A) 9m. B) 3m. C) 5m. D) 6m

A particle projected with initial velocity U along X axis such that it suffers deaccelaration given by Ax^3(where A is constant).the distdistance X at which the particle is...

A cart moving horizontal along a straight line with constant speed of 20m/s.a projectile is to be fired from the moving cart so that it returns to the same cart aafter the cart has moved 60m.the speed with which the projectile must be find with speed to cart is...
A) 5m/s. B)10m/s. C) 15m/s. D) 20m/s

A ball is rolls the top of stairs way with a horizontal velocity of magnitude 2m/s.the steps are 10cm high and 20 cm wide.if g=10m/s^2.then the baball hits first the edge of ....
A) 1st. B) 2nd. C) 3rd. E) 4th