Answer:
A and B are correct both are correct
Answer:
a) 10 m/s; 9.8 m/s²
Explanation:
After leaving the bench the boy undergoes a semi-projectile motion from top to bottom. Neglecting the effects of air friction, we can safely assume that the horizontal velocity remains constant throughout the motion. Thus, the magnitude of velocity is 10 m/s. The only acceleration in the boy is the acceleration due to gravity, due to free fall motion. Therefore, the magnitude of acceleration is 9.8 m/s².
Therefore, One tenth of a second after he leaves the bench, to two significant figures, the magnitudes of his velocity and acceleration are:
a) <u>10 m/s; 9.8 m/s²</u>
Answer: Mass, specific heat capacity and temperature difference.
Explanation:
Transfer of energy from one substance depends on the difference in the temperature, mass of the substance and specific heat capacity.
More the mass, temperature difference and specific heat capacity, more would be the amount of transfer of energy. Hence, the three properties of a substance which affect the amount of energy transferred are difference in the temperature, mass of the substance and specific heat capacity.
