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10 months ago

Please Help Me And Also Remember To Number The Answer

Physics

1 answer:

Anastasy [175]10 months ago

8 0

The pace at which an object's momentum changes is defined by force. Momentum is the motion of an item. When an item moves with double the velocity, its momentum doubles. As you change the speed of an object, the force causes it to change momentum. So momentum is the product of force and time.

1. Momentum = 100kg.m/s

Momentum is the motion contained in any object/ mass and is simply the product of mass and velocity

So momentum = mass × velocity

Momentum = 25× 4

= 100kg.m/s

2. As, we know momentum = mass × velocity

that is p = mv

we have momentum (p) = 2 kg m/s and velocity (v) = 8 m/s

so substitute values in p=mv

2 kg m/s = m × 8 m / s

m = 2 / 8 kg = 0.25 kg

Therefore, mass of substance is 0.25 kg.

3. Momentum(M) = mass(m) x velocity(v)

Given: mass(m) = 25 kg and momentum(M) = 125 (kgxm)/sec

125 = 25 x v

v = 5 m/sec

The car is going 5 m/s

4. Weight = 1.4 N

we need to calculate mass first,

mass = weight / g

mass = 1.4 / 9.8

= 0.142 kg

momentum = mass × velocity

momentum = 0.142 × 44.7

Momentum = 6.3474 kg m/s

For 1. Momentum = 100kg.m/s, 2. mass of substance is 0.25 kg, 3. The car is going 5 m/s, 4. Momentum = 6.3474 kg m/s

Learn more about momentum here

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