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3 years ago

Which object would have MORE kinetic energy?

Physics

2 answers:

GuDViN [60]3 years ago

7 0

Answer:

$energy \: = \frac{1}{2} m {c}^{2} \\ energy \: is \: directly \\ \: protional \: to \: mass \\ the \: hevier \: the \: object \\ the \: more \: k.e.$

valentinak56 [21]3 years ago

6 0

Answer:

A dump truck going 70 mph

Explanation:

hope it helps you

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A particle moving along the x-axis has its velocity described by the function vx =2t2m/s, where t is in s. Its initial position

Illusion [34]

Answer:

Follows are the solution to this question:

Explanation:

In point a:

Place of particles

$X(t)=\int V_{x}(t)dt$

$=\int 2t^{2}dt\\\\=\frac{2}{3}t^{3}+C$

$\to t=0\\\\ \to X(0)=2.3 \ m$

$\to X(0)=0+C\\\\ \to C=2.3\ m$

$\to X(t)=( \frac{2}{3})t^3 + 2.3\\\\ \to t=2.2\\\\\to X=( \frac{2}{3})\times 2.2^3 +2.3 \\\\$

$= \frac{2}{3}\times 10.648 +2.3\\\\= \frac{21.296}{3}+2.3\\\\ = 7.09+2.3\\\\ =9.39\\\\ =9.4\ m$

In point b:

when $t=2.2 \ s$

the Particle velocity $(V)=2 \times 2.22 =9.68\ \frac{m}{s}$

In point c:

Calculating the Particle acceleration:

$\to a=\frac{dV}{dt} =4\ t\\\\\to t=2.2 \ s\\\\\to a=4\times 2.2 =8.8 \ \frac{m}{s^2}$

8 0

3 years ago

Joel uses a crew hammer to remove a nail from a wall . He applied a force 40 newtons on the hammer. The hammer applied a force o

zaharov [31]

By mechanical advantage 160/40=4

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4 years ago

Calculate the percent error of the distance to the moon.

Bess [88]

Answer:

Explanation:

Difference in the measurement by shuttle crew Δ d = 238857 - 226316 miles

= 12541 miles

Actual measurement = 238857 miles

percentage error

= (12541 / 238857 ) x 100

= 5.25 %

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3 years ago

What happens when light enters a pair of glasses

alexdok [17]

Answer:

It refracts when it hits the glass.

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3 years ago

When you stretch a spring 33 cm past its natural length, it exerts a force of 6 N. What is the spring constant of this spring?

PilotLPTM [1.2K]

The spring formula:

   Force = - (spring constant) · (distance stretched or squashed)

   6 N = - (spring constant) · (33 cm)

   = - (0.33 m) · (spring constant)

Spring constant = - (6 N) / (0.33 m)

=    - 18.18 N/meter .

The negative signs means that the spring always wants to go in the
opposite direction from where you forced it, and return to its relaxed
length. If you stretch it, it tries to get shorter, and if you compress it,
it tries to get longer.

6 0

3 years ago

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