Physics, 14.01.2021 07:40 dayday0

A horizontal net force is exerted on an object at rest. The object starts at x=0m and has a speed at 4.0 m/s after moving 4.0 along a horizontal frictionless surface. The net force f as a function of the object's position x is shown below.

A horizontal net force is exerted on an object at rest. The object starts at x=0m and has a speed a

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the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

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The sample with the lowest specific heat capacity will have the greatest temperature increase. in this case, it would be platinum.

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force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

Answer from: Quest

higher potential

explanation:

because it is in a high speed so it must move into a of high potential

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A horizontal net force is exerted on an object at rest. The object starts at x=0m and has a speed at...

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