Question

calculate the work done by an applied force to lift a 20-newton block vertically to a distance of 5 m at a constant speed.
a 80 j
b 50 j
c 100 j
d 120 j

Explanation:

Step1: Recall Work Formula

Work \( W \) is force \( F \) times distance \( d \), \( W = F \times d \).

Step2: Identify Values

Force \( F = 20 \, \text{N} \), distance \( d = 5 \, \text{m} \).

Step3: Calculate Work

Substitute into formula: \( W = 20 \times 5 = 100 \, \text{J} \).

Answer:

c. 100 J