Question

1SL
Date: 17 August, 2019
An object start sliding on a frictionless inclined plane and from same height another object start falling
freely (RPET 2000]
(a) Both will reach with same speed
(c) Both will reach in same time
(b) Both will reach with same acceleration (d) None of above
A Body moves 6 m north. 8 m east and 10 m vertically upwards, what is its resultant displacement from
initial position
at 10V2 m
(b) 10 m
(d) 20 m
An aeroplane flies 400 m north and 300 m south and then flies 1200 m upwards then net displacement
is (AFMC 2004)
Va) 1200 m
(b) 1300 m
(c) 1400 m
(d) 1500 m
An athlete completes one round of a circular track of radius R in 40 sec. What will be his displacement
at the end of 2 min. 20 sec [NCERT 1990; Kerala PMT 2004)
(a) 0
(6) 2R
(c) 2R
(d) 7TR
A person travels along a straight road for half the distance with velocity V, and the remaining half​

Answer 1

Answer:

1.none of the above(not fully sure)

2.a 10√2

3.b 1300

4.2R

Explanation:

1.as one component of the gravitational force will act on the sliding object.hence its acceleration will be lesser resulting in less speed.

2. 8m and 6m are on one plane and 10m on another plane hence displacement will be √(8)²+(6)² +√(10)² =√100+√100 =10√2