141398 A body of mass \(m\) moving along a straight line covers half the distance with a speed of \(2 \mathrm{~ms}^{-1}\). The remaining half of the distance is covered in two equal time intervals with a speed of \(3 \mathrm{~ms}^{-1}\) and \(5 \mathrm{~ms}^{-1}\) respectively. The average speed of the particle for the entire journey is

141175 A motor car moving with velocity \(7 \mathrm{~m} / \mathrm{s}\) stops in \(10 \mathrm{~m}\) distance when brakes are applied. What is the relation between the resistance force ( \(R\) ) and the weight of \((\mathrm{W})\) the car ? (Take value of \(g=9.8 \mathrm{~m} / \mathrm{s}^{2}\))

141155 The displacement of particle is given by
\(x=a_{0}+\frac{a_{1} t}{2}-\frac{a_{2} t^{2}}{3}\)
What is its acceleration?

141158 The ratio of displacement to distance for a moving particle is

141218 A car travels from point \(A\) to point \(B\) at a speed \(40 \mathrm{~km} / \mathrm{h}\). The car then returns from \(B\) to \(A\) at a speed \(60 \mathrm{~km} / \mathrm{h}\). The average speed for the round trip is :

141398 A body of mass \(m\) moving along a straight line covers half the distance with a speed of \(2 \mathrm{~ms}^{-1}\). The remaining half of the distance is covered in two equal time intervals with a speed of \(3 \mathrm{~ms}^{-1}\) and \(5 \mathrm{~ms}^{-1}\) respectively. The average speed of the particle for the entire journey is

141175 A motor car moving with velocity \(7 \mathrm{~m} / \mathrm{s}\) stops in \(10 \mathrm{~m}\) distance when brakes are applied. What is the relation between the resistance force ( \(R\) ) and the weight of \((\mathrm{W})\) the car ? (Take value of \(g=9.8 \mathrm{~m} / \mathrm{s}^{2}\))

141155 The displacement of particle is given by
\(x=a_{0}+\frac{a_{1} t}{2}-\frac{a_{2} t^{2}}{3}\)
What is its acceleration?

141158 The ratio of displacement to distance for a moving particle is

141218 A car travels from point \(A\) to point \(B\) at a speed \(40 \mathrm{~km} / \mathrm{h}\). The car then returns from \(B\) to \(A\) at a speed \(60 \mathrm{~km} / \mathrm{h}\). The average speed for the round trip is :

141398 A body of mass \(m\) moving along a straight line covers half the distance with a speed of \(2 \mathrm{~ms}^{-1}\). The remaining half of the distance is covered in two equal time intervals with a speed of \(3 \mathrm{~ms}^{-1}\) and \(5 \mathrm{~ms}^{-1}\) respectively. The average speed of the particle for the entire journey is

141175 A motor car moving with velocity \(7 \mathrm{~m} / \mathrm{s}\) stops in \(10 \mathrm{~m}\) distance when brakes are applied. What is the relation between the resistance force ( \(R\) ) and the weight of \((\mathrm{W})\) the car ? (Take value of \(g=9.8 \mathrm{~m} / \mathrm{s}^{2}\))

141155 The displacement of particle is given by
\(x=a_{0}+\frac{a_{1} t}{2}-\frac{a_{2} t^{2}}{3}\)
What is its acceleration?

141158 The ratio of displacement to distance for a moving particle is

141218 A car travels from point \(A\) to point \(B\) at a speed \(40 \mathrm{~km} / \mathrm{h}\). The car then returns from \(B\) to \(A\) at a speed \(60 \mathrm{~km} / \mathrm{h}\). The average speed for the round trip is :

141398 A body of mass \(m\) moving along a straight line covers half the distance with a speed of \(2 \mathrm{~ms}^{-1}\). The remaining half of the distance is covered in two equal time intervals with a speed of \(3 \mathrm{~ms}^{-1}\) and \(5 \mathrm{~ms}^{-1}\) respectively. The average speed of the particle for the entire journey is

141175 A motor car moving with velocity \(7 \mathrm{~m} / \mathrm{s}\) stops in \(10 \mathrm{~m}\) distance when brakes are applied. What is the relation between the resistance force ( \(R\) ) and the weight of \((\mathrm{W})\) the car ? (Take value of \(g=9.8 \mathrm{~m} / \mathrm{s}^{2}\))

141155 The displacement of particle is given by
\(x=a_{0}+\frac{a_{1} t}{2}-\frac{a_{2} t^{2}}{3}\)
What is its acceleration?

141158 The ratio of displacement to distance for a moving particle is

141218 A car travels from point \(A\) to point \(B\) at a speed \(40 \mathrm{~km} / \mathrm{h}\). The car then returns from \(B\) to \(A\) at a speed \(60 \mathrm{~km} / \mathrm{h}\). The average speed for the round trip is :

141398 A body of mass \(m\) moving along a straight line covers half the distance with a speed of \(2 \mathrm{~ms}^{-1}\). The remaining half of the distance is covered in two equal time intervals with a speed of \(3 \mathrm{~ms}^{-1}\) and \(5 \mathrm{~ms}^{-1}\) respectively. The average speed of the particle for the entire journey is

141175 A motor car moving with velocity \(7 \mathrm{~m} / \mathrm{s}\) stops in \(10 \mathrm{~m}\) distance when brakes are applied. What is the relation between the resistance force ( \(R\) ) and the weight of \((\mathrm{W})\) the car ? (Take value of \(g=9.8 \mathrm{~m} / \mathrm{s}^{2}\))

141155 The displacement of particle is given by
\(x=a_{0}+\frac{a_{1} t}{2}-\frac{a_{2} t^{2}}{3}\)
What is its acceleration?

141158 The ratio of displacement to distance for a moving particle is

141218 A car travels from point \(A\) to point \(B\) at a speed \(40 \mathrm{~km} / \mathrm{h}\). The car then returns from \(B\) to \(A\) at a speed \(60 \mathrm{~km} / \mathrm{h}\). The average speed for the round trip is :