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3 years ago

14

A dog, that has a mass of 16 kgs, runs across a yard. What is the average force applied to the dog from the ground as it runs ac

ross the yard?

1 answer:

VikaD [51]3 years ago

4 0

Answer:

156.96 N

Explanation:

F=ma where m is the mass and a is acceleration

Substituting 16 Kg for m and 9.81 m/s2 for g then

F=16*9.81= 156.96 N

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A car with a mass of 3 Kg and velocity of 40 m/s collided with a truck of a velocity of 60 m/s, if the momentum is conserved wha

Luden [163]

Answer:

the mass of the truck is 2 kg.

Explanation:

Given;

mass of the car, m₁ = 3 kg

initial velocity of the car, u₁ = 40 m/s

initial velocity of the truck, u₂ = 60 m/s

let the mass of the truck = m₂

Apply the principle of conservation of linear momemtum;

m₁u₁ = m₂u₂

m₂ = (m₁u₁) / u₂

m₂ = (3 x 40) / (60)

m₂ = 2 kg

Therefore, the mass of the truck is 2 kg.

4 0

3 years ago

Determine the acceleration that result when a 12-N net force is applied to a 3-kg object and then to a 6-kg object

user100 [1]

For 3 kg mass: <em>F = $\lpha ma,a$ = $\frac{F}{m}$ = $\frac{12N}{3kg}$ = 4 $\lpha m$ / $s^{2}$ </em>

For 6 kg mass: <em>F = $\lpha ma,a$ = $\frac{F}{m}$ = $\frac{12N}{6kg}$ = 2 $\lpha m$ / $s^{2}$ </em>

Hope this helped, have a great day!~

3 0

3 years ago

Write down the kirchhoff's laws in the adjoining circuit , find the current in each resistors

lapo4ka [179]

Answer:

You need a motor and a battery

Explanation:

4 0

3 years ago

Water drips from a faucet at the rate of 150 drops in 120 seconds. What is the period?

user100 [1]

Answer:

.80

Explanation:

7 0

3 years ago

What is the average speed of a cheetah that runs 88 m in 5 seconds

vovangra [49]

So, the average speed of the Cheetah is 17.6 m/s.

<h3>Introduction</h3>

Hello ! I'm Deva from Brainly Indonesia. This time, I will help regarding the average speed. The average speed is obtained from finding the average of the speeds that occur or can be detected from the division between distance and travel time. The average speed can be formulated by :

$\boxed{\sf{\bold{\overline{v} = \frac{s}{t}}}}$

With the following condition :

$\sf{\overline{v}}$ = average speed (m/s)
s = shift or distance objects from initial movement (m)
t = interval of the time (s)

<h3>Problem Solving</h3>

We know that :

s = shift = 88 m
t = interval of the time = 5 seconds

What was asked :

$\sf{\overline{v}}$ = average speed = ... m/s

Step by step :

$\sf{\overline{v} = \frac{s}{t}}$

$\sf{\overline{v} = \frac{88}{5}}$

$\boxed{\sf{\overline{v} = 17.6 \: m/s}}$

So, the average speed of the Cheetah is 17.6 m/s.

5 0

3 years ago