Answer:

Explanation:
m/s is the unit for speed, so (m/s)/s is the rate of change of speed.
The rate of change of speed is acceleration.
B), C), and D) are wrong. They all have the units of m/s.
Answer:

Explanation:
Quantity of copper measured by a student = 4.6 grams
Original quantity of copper = 4.7 grams
Error in measurement = Original quantity of copper - Quantity of copper measured by a student
grams
To find the percent error, apply the following formula:
Percent error = (Error in measurement / Original quantity of copper) × 100

The final temperature :T₂=411.125 K = 138.125 °C
<h3>Further explanation</h3>
Given
T₁=-20 °C+273 = 253 K
V₁=40 ml
V₂=65 ml
Required
Final temperature
Solution
Charles's Law
When the gas pressure is kept constant, the gas volume is proportional to the temperature

Input the value :
T₂=(V₂.T₁)/V₁
T₂=(65.253)/40
T₂=411.125 K = 138.125 °C