All categories

2 years ago

What is the rate of acceleration of a 2,000 kilogram truck if a force of 4,200 N is used to make it start moving forward?

Physics

2 answers:

gizmo_the_mogwai [7]2 years ago

7 0

Answer: 2.1

Explain:
F = ma
a = F/m = 4,200/ 2,000
a = 2.1

Svetlanka [38]2 years ago

3 0

2.1m/s^2 is the answer to
Your question. I hope that helps.

You might be interested in

A student produces a power of p = 0.87 kw while pushing a block of mass m = 75 kg on an inclined surface making an angle of Î¸ =

Paul [167]

When block is pushed upwards along the inclined plane

the net force applied on the block will be given as

$F_{net} = mg sin\theta + \mu_k mg cos\theta$

here we know that

m = 75 kg

$\theta = 8.5 degree$

$\mu_k = 0.16$

now plug in all values into this

$F_{net} = 75\times 9.8 sin8.5 + 0.16 \times 75\times 9.8 cos8.5$

$F = 225 N$

now for finding the power is given as

$P = Fv$

$0.87 \times 10^3 = 225 \time v$

$v = \frac{870}{225} = 3.87 m/s$

6 0

2 years ago

Click all that are examples of Kinetic Energy

irinina [24]

Answer: Salt and A moving baseball

Explanation: Just got 100 on the quiz.

4 0

2 years ago

• Describe the importance of a commonly used measuring system. Be prepared to give two examples of why having a common system of

IrinaVladis [17]

Metric system. important because it saves us time due to the fact that we do not have to convert our units every time.

3 0

2 years ago

Which test was conducted on the skin found under the victim’s nails

DENIUS [597]

. Underclothes; Bedding; Dirty laundry; Fingernail scrapings; Cups/bottles ... A cigarette butt found at a crime scene may contain valuable DNA material in the dried ... DNA evidence from both the victim's blood and the perpetrator's skin cells may ... DNA testing must be conducted in a laboratory with dedicated facilities and ...

5 0

3 years ago

Read 2 more answers

When it is at rotating at full speed, a disk drive in a certain old computer game system revolves once every 0.050 seconds. Star

Gemiola [76]

Answer:

α = 200*π rad/sec²

Explanation:

If the disk drive revolves once every 0.05 sec, this means that the angular velocity can be expressed as follows:

$\omega = \frac{2*\pi}{0.05s} = 40*\pi rad/sec$

(just applying the definition of angular velocity)
Now, it the disk started from rest, and took two revolutions to reach to full speed, assuming that the angular acceleration is constant, we can find the angular acceleration applying this kinematic equation:

$\omega_{f} ^{2} -\omega_{0} ^{2} = 2*\alpha * \Delta\theta$

where Δθ, is the angle rotated while it went from rest to full speed, i.e., 2 revolutions, or 2*π rads.
Replacing by the value that we found for ωf (as ω₀ = 0), we can solve for α :

$\alpha =\frac{\omega_{f}^{2} }{2*\Delta\theta} = \frac{(40*\pi)^{2} }{2*2*2*\pi } =\\ \\ \alpha = 200*\pi rad/sec2$

3 0

3 years ago