All categories

3 years ago

Calculate the speed for a car that went a distance of 125 miles in

1 answer:

3 0

Speed = distance / time
= 125 miles / 2 hr
= 62.5 mi/h

Convert 65.5 mi/h to km/h

= 65.5 / 5
= 13.1
=13.1 x 8
= 104.8 km/h

Therefore speed equal 104.8 km/h

You might be interested in

Estimate the volume of each ball. Use the formula

Elanso [62]

Answer:

Vtennis = 134 [cm^3]; Vgolf = 40.76 [cm^3]

Explanation:

To solve this problem we must have the values of the radius or diameters of each of these balls, therefore performing an internet search we can appreciate that the diameters of these balls are:

Dt = 6.35[cm]

Dg = 4.27[cm]

But we need the radius, and we know that the radius is equal to the half of the diameter.

Rt = 3.175 [cm]

Rg = 2.135 [cm]

Now replacing this values in the given equation:

$V = \frac{4}{3} *\pi *r^{3}\\ V_{tennis}= \frac{4}{3} *\pi *(3.175)^{3}\\ V_{tennis}= 134.06[cm^3]\\\\ V_{golf}= \frac{4}{3} *\pi *(2.135)^{3}\\V_{golf}= 40.76 [cm^3]$

6 0

4 years ago

Read 2 more answers

Helllppp mee!

Fed [463]

Given:

m = 0.14 kg

v = 18 m/s

To find:

Kinetic energy= ?

Explanation:

Kinetic energy of the object is possessed when the object is in motion. It is define as the work done required to accelerate a body from rest to motion. Unit of energy is Joule and it is same as unit of work done. Energy is nothing but the capacity to do work.

Solution:

Kinetic energy of the ball is given by,

Kinetic energy = $\frac{1}{2}m v^{2}$

m = 0.14 kg

v = 18 m/s

Kinetic energy = $\frac{1}{2}(0.14) (18)^{2}$

Kinetic energy = 226.8 Joule

5 0

3 years ago

Read 2 more answers

A 30 cm scale has one end broken. The mark at the broken end is 2.6 cm. How would you use it to measure the length of your penci

lidiya [134]

Answer:

the mark of the broken end is 2.6 cm so, we use the scale from the next full mark i.e. 3cm

Explanation:

we now measure the length of the pencil by keeping the 3 cm mark of the scale at it's left end.

The 3 cm value is then subtracted from the scale reading at the right side end of the pencil to obtain the correct length of the pencil. ✏️

(i i ) place the scale in the contact with object along it's length

(2) Your eyes must be exactly in front of the point where the measurements to be taken.

Hope_it_helps_mga_ka_joiners_mwehehe

6 0

3 years ago

Suppose that a stray neutron with an initial speed of 1.4 x 107 m/s is just barely captured by a nucleus with diameter d = 1.0 X

son4ous [18]

Answer:

$F=16.366N$

Explanation:

Given data

Initial velocity of neutron v₀=1.4×10⁷m/s

Diameter of nucleus d=1×10⁻¹⁴m

Mass of neutron m=1.67×10⁻²⁷kg

The acceleration of neutron is given from equation :

$v^{2}=v_{o}^{2}+2ad\\ where\\v=0\\So\\a=\frac{v^{2}-v_{o}^{2} }{2d}\\ a=\frac{-v_{o}^{2}}{2d}\\ a=\frac{-(1.4*10^{7}m/s )^{2}}{2(1.0*10^{-14} m)}\\a=-9.81*10^{27}m/s^{2}$