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3 years ago

How to solve 56 equals 1/2 velocity squared

Physics

1 answer:

Alexxx [7]3 years ago

8 0

Explanation:

Kinetic Energy (K.E)= 1/2 velocity (v) ^2

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A large truck with a mass of 3200 kg is pulling a trailer with a mass of 2400 kg. Both are accelerating at a rate of 0.45 . Dete

Gwar [14]

Given:

Mass of truck, m1 = 3200 kg

Mass of trailer, m2 = 2400 kg

acceleration = 0.45 m/s²

Let's determine the following:

(a) The tension force between the truck and the trailer.

To find the tension between the truck and the trailer, apply the formula:

$F_{\text{net}}=a(m_1+m_2)$

Where:

Fnet is the tension between the truck and the trailer

a is the acceleration = 0.45 m/s²

m1 is the mass if the truck = 3200 kg

m2 is the mass of trailer = 2400 kg

Hence, we have:

$\begin{gathered} F_{net}=0.45(3200+2400) \\ \\ F_{\text{net}}=0.45(5600) \\ \\ F_{\text{net}}=2520\text{ N} \end{gathered}$

Therefore, the tension between the truck and the trailer is 2520N

(b) The force with which the truck is pulling.

The tension between the truck and the trailer is equivalent to the force on the trailer.

thus, we have:

$\begin{gathered} T=m_2a \\ \\ T=2400\times0.45 \\ \\ T=1080\text{ N} \end{gathered}$

Therefore, the force with which the truck is pulling is 1080N.

ANSWER:

(a) 2520N

(b) 1080 N

8 0

2 years ago

Q = cmAT

castortr0y [4]

Answer: $Q=3000 cal$

Explanation:

We are given the following formula:

$Q=m. c. \Delta T$ (1)

Where:

$Q=3000 cal$ is the amount of heat

$m=300g$ is the mass of water

$c=1 cal/g \°C$ is the specific heat of water

$\Delta T$ is the variation in temperature, which in this case is $\Delta T=30\°C-20\°C=10\°C$

Rewriting equation (1) with the known values at the right side, we will prove the result is $3000 cal$ :

$Q=(300g)(1 cal/g \°C)(10\°C)$ (2)

$Q=3000 cal$ This is the result

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3 years ago

Why are logarithmic scales useful in earth science?

Yuri [45]

The differences in energy released by earthquakes are too large to express with linear scales.

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3 years ago

Saturn has a radius of about 9.0 earth radii, and a mass 95 times the Earth’s mass. Estimate the gravitational field on the surf

olchik [2.2K]

Answer:The gravitational field on Saturn can be calculated by the following formula;

Explanation:

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4 years ago

You are tossing pizza dough to get it ready to bake. If you toss the dough upward with a speed of 3.1 m/s, how high does it go?

ella [17]

0.49
hope it help Apex

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3 years ago

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