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olganol [36]
3 years ago
13

If a bicyclist, with an initial velocity of zero, steadily gained speed until reaching a final velocity of 13m/s, how far would

she travel during this race? (Her time limit is 12s)
Physics
2 answers:
a_sh-v [17]3 years ago
6 0

Answer:

78 meters

Explanation:

v=u+at

13=0+a×12

a=13/12 m/s^2

Now,

v²=u²+2as

13²=2×(13/12)×s

s=13×6=78 meters

Hope, this helps you.

Semmy [17]3 years ago
5 0

Answer:

156m

Explanation:

  • velocity=distance/time
  • V=13, S=?, T=12s

13=S/12

  • cross multiply

S= 13×12

S= 156m

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Answer:h=19.4 m

Explanation:

Given

mass of automobile m=750\ kg

Initial height of automobile h_o=5\ m

Velocity at this instant v=16.8\ m/s

If the car stops somewhere at a height h

Thus conserving total energy we get

K_i+U_i=K_f+U_f

\frac{1}{2}mv^2+mgh_o=\frac{1}{2}m(0)^2+mgh

\frac{v^2}{2g}+h_o=h

h=5+\frac{16.8^}{2\times 9.8}

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sineoko [7]

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8 m/s to the left.

Explanation:

Applying,

V = d/t...................... Equation 1

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From the question,

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Substitute these values into equation 1

V = 24/3

V = 8 m/s to the left.

Hence the velocity of the car is 8 m/s to the left.

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