Ask question

Ask question

All categories

3 years ago

15

Two persons are applying forces on two opposite sides of a moving cart. The cart still moves with the same speed in the same dir

ection. What do you infer about the magnitudes and direction of the forces applied?

1 answer:

masya89 [10]3 years ago

3 0

They are pushing on opposite sides against each other. The cart is moving forwards

You might be interested in

This important factor of survival for the coral reef is

inna [77]

Answer: biotic

Explanation:

6 0

2 years ago

What is the resultant of a and b if a = 3i 3j and b = 3i − 3j?

ss7ja [257]

<span>a+b= ?
3i +3j + (3i -3j) = ?
3i + 3j + 3i -3j =?
= 6i + 0j</span>

3 0

3 years ago

Read 2 more answers

A helicopter starting on the ground is rising directly into the air at a rate of 25 ft/s. You are running on the ground starting

rusak2 [61]

Answer:

The rate of change of the distance between the helicopter and yourself (in ft/s) after 5 s is $\sqrt{725}$ ft/ sec

Explanation:

Given:

h(t) = 25 ft/sec

x(t) = 10 ft/ sec

h(5) = 25 ft/sec . 5 = 125 ft

x(5) = 10 ft/sec . 5 = 50 ft

Now we can calculate the distance between the person and the helicopter by using the Pythagorean theorem

$D(t) = \sqrt{h^2 + x^2}$

Lets find the derivative of distance with respect to time

$\frac{dD}{dt} (t) = \frac{2h \cdot \frac{dh}{dt} +2x \cdot\frac{dx}{dt}} {2\sqrt{h^2 + x^2}}$

Substituting the values of h(t) and x(t) and simplifying we get,

$\frac{dD}{dt}(t) = \frac{50t \cdot \frac{dh}{dt} + 20 \cdot \frac{dx}dt}{2\sqrt{625\cdot t^2 + 100 \cdot t^2}}$

$\frac{dh}{dt} = 25ft/sec$

$\frac{dx}{dt} = 10 ft/sec$

$\frac{Dd}{dt} (t) = \frac{1250t +200t}{2\sqrt{725}t}$ = $\frac{725}{\sqrt{725}}$ = $\sqrt{725}$ ft / sec

5 0

3 years ago

A person starts at a position of 16 meters and finishes at a position of

DochEvi [55]

Answer:

38 is a good girl and a great place to work for u and I miss you y and I miss you much love your love and love to

7 0

3 years ago

A ray in flint glass (n = 1.61)

Scilla [17]

Answer:0

Explanation:

0

4 0

2 years ago

Read 2 more answers