Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
An athlete runs at a speed of 8 m/s for 10 s
PHYSICS · Single correct · CBSE · Physics · Motion · Motion
Problem
An athlete runs at a speed of 8 m/s for 10 s, and then at a speed of 6 m/s for 12 s. Which calculation gives the average speed of the athlete in m/s? (A)
8
+
6
2
\frac{8 + 6}{2}
2
8
+
6
(B)
(
8
×
10
)
+
(
6
×
12
)
22
\frac{(8 \times 10) + (6 \times 12)}{22}
22
(
8
×
10
)
+
(
6
×
12
)
(C)
(
8
÷
10
)
+
(
6
÷
12
)
22
\frac{(8 \div 10) + (6 \div 12)}{22}
22
(
8
÷
10
)
+
(
6
÷
12
)
(D)
(
10
÷
8
)
+
(
12
÷
6
)
22
\frac{(10 \div 8) + (12 \div 6)}{22}
22
(
10
÷
8
)
+
(
12
÷
6
)
Related theory
1D Motion: Distance, Displacement, Speed & Velocity
Speed, velocity and acceleration
Speed and average speed
Motion
Browse the problem library