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2 years ago

Please help Newton second law of motion is F =ma

Physics

2 answers:

mamaluj [8]2 years ago

6 0

Answer: ma is the formula of Newton's Second Law of Motion. Newton's Second Law of Motion is defined as Force is equal to the rate of change of momentum. For a constant mass, force equals mass times acceleration.

Explanation: Newton's second law of motion is F = ma, or force is equal to mass times acceleration.

NikAS [45]2 years ago

6 0

Hi there!

Using Newton's Second Law:
$F = ma$

F = Net Force (60 N)
m = mass (30 kg)
a = acceleration (m/s²)

Solve for acceleration given the other values.

$60 = 30a\\\\a = \frac{60}{30} = \boxed{2 \frac{m}{s^2}}$

If the net force increases (while the mass is held constant), the acceleration will INCREASE.

If the mass of the object increases (while the net force is held constant), then the acceleration will DECREASE.

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2 years ago

Read 2 more answers

A boat is traveling at an initial velocity of 2.7 meters per second in the positive direction. It accelerates at a rate of 0.15

cupoosta [38]

Answer:

$\boxed {\boxed {\sf 4.5 \ m/s \ in \ the \ positive \ direction}}$

Explanation:

We are asked to find the final velocity of the boat.

We are given the initial velocity, acceleration, and time. Therefore, we will use the following kinematic equation.

$v_f= v_i + at$

The initial velocity is 2.7 meters per second. The acceleration is 0.15 meters per second squared. The time is 12 seconds.

$v_i$ = 2.7 m/s
a= 0.15 m/s²
t= 12 s

Substitute the values into the formula.

$v_f = 2.7 \ m/s + (0.15 \ m/s^2)(12 \ s)$

Multiply the numbers in parentheses.

$v_f= 2.7 \ m/s + (0.15 \ m/s/s * 12 \ s)$

$v_f = 2.7 \ m/s + (0.15 \ m/s *12)$

$\v_f=2.7 \ m/s + (1.8 \ m/s)$ $v_f=2.7 \ m/s + (1.8 \ m/s)$

Add.

$v_f=4.5 \ m/s$

The final velocity of the boat is <u>4.5 meters per second in the positive direction.</u>

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2 years ago

Please help Newton second law of motion is F =ma ​

Please help Newton second law of motion is F =ma