If a vector A is multiplied by a real number (say n), the vector of same nature is obtained but its magnitude is n times that of A.
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Time taken (t) = 3 sec
Velocity of sound (v) = 332 m/s
Distance travelled (d) = ?
We know,
d = v x t = 332 x 3 = 996 m
Hence, the source of thunder is about 996 m far from the boy.
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- Statement; true
- Statement; false
- Statement; true
- Interrogative sentence; not a statement
- Imperative sentence; not a statement
- Exclamatory sentence; not a statement
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In the air, there's nothing holding the body of the helicopter still - so the rotor blades spin one direction, but the torque applied to spin the rotors tries to spin the body of the helicopter in the opposite direction. The little rotor on the tail helps keep the body of the helicopter pointed in the same direction.
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