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Physics-

General

Easy

Question

Suppose a player hits several baseballs. Which baseball will be in the air for the longest time?

The one with the farthest range.
The one which reaches maximum height.
The one with the greatest initial velocity.
The one leaving the bat at 45° with respect to the ground.

The correct answer is: The one which reaches maximum height.

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The points i+j-k, i+2j, 2i+2j+k, 2i+3j+2k are

The points i+j-k, i+2j, 2i+2j+k, 2i+3j+2k are

The ratio in which the line segment joining the points with position vectors i+2j+3k, -3i+6j-8k is divided by xy plane is ____________

The ratio in which the line segment joining the points with position vectors i+2j+3k, -3i+6j-8k is divided by xy plane is ____________

P is a point on the line passing through the point A(3i+j-k) and parallel to 2i-j+k such that AP =9 then the position vector of P is

P is a point on the line passing through the point A(3i+j-k) and parallel to 2i-j+k such that AP =9 then the position vector of P is

parallel

If ABCDEF is a regular hexagon and G is the centre of hexagon and $Error converting from MathML to accessible text.$ then $lambda space equals space$

If ABCDEF is a regular hexagon and G is the centre of hexagon and $Error converting from MathML to accessible text.$ then $lambda space equals space$

Unit vector making angles $fraction numerator text π end text over denominator text 6 end text end fraction comma fraction numerator text π end text over denominator text 6 end text end fraction comma fraction numerator text π end text over denominator text 3 end text end fraction$ with $Error converting from MathML to accessible text.$ direction is :

Unit vector making angles $fraction numerator text π end text over denominator text 6 end text end fraction comma fraction numerator text π end text over denominator text 6 end text end fraction comma fraction numerator text π end text over denominator text 3 end text end fraction$ with $Error converting from MathML to accessible text.$ direction is :

If the three vectors 2i-j+k, i+2 $lambda$ j-3k and 3i+j+5k are coplanar then $lambda$ =

If the three vectors 2i-j+k, i+2 $lambda$ j-3k and 3i+j+5k are coplanar then $lambda$ =

parallel

If a = 2i+4j-5k, b= i+j+k, c = j+2k then the unit vector parallel to a+b+c is

If a = 2i+4j-5k, b= i+j+k, c = j+2k then the unit vector parallel to a+b+c is

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The ratio in which the line segment joining $x subscript 1 end subscript stack i with minus on top$ + $y subscript 1 end subscript stack j with minus on top$ + $z subscript 1 end subscript stack k with minus on top$ and $x subscript 2 end subscript stack i with minus on top$ + $y subscript 2 end subscript stack j with minus on top$ + $z subscript 2 end subscript stack k with minus on top$ is divided by x $stack i with minus on top$ +y $stack j with minus on top$ +z $Error converting from MathML to accessible text.$ is

A body initially at rest, starts moving along x-axis in such a way so that its acceleration vs displacement plot is as shown in figure. The maximum velocity of particle is

A body initially at rest, starts moving along x-axis in such a way so that its acceleration vs displacement plot is as shown in figure. The maximum velocity of particle is

Physics-General

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Each of the three graphs represents acceleration versus time for an object that already has a positive velocity at time t₁. Which graphs show an object whose speed is increasing for the entire time interval between t₁ and t₂?

Each of the three graphs represents acceleration versus time for an object that already has a positive velocity at time t₁. Which graphs show an object whose speed is increasing for the entire time interval between t₁ and t₂?

Physics-General

The graph to the right is a plot of position versus time. For which labeled region is the velocity positive and the acceleration negative?

The graph to the right is a plot of position versus time. For which labeled region is the velocity positive and the acceleration negative?

Physics-General

A body moves with velocity $v equals e n invisible function application x m divided by s$ where x is its position The net force acting on body is zero at:

A body moves with velocity $v equals e n invisible function application x m divided by s$ where x is its position The net force acting on body is zero at:

Physics-General

parallel

After firing, a bullet is found to move at an angle of 37° to horizontal. Its acceleration is 10 m/ s ² downwards. Find the component of acceleration in the direction of the velocity.

After firing, a bullet is found to move at an angle of 37° to horizontal. Its acceleration is 10 m/ s ² downwards. Find the component of acceleration in the direction of the velocity.

Physics-General

A gas bubble oscillates with a time period T proportional to Pa db E_c where P is pressure, d is the density and E is the energy. The values of a, b & c are :

A gas bubble oscillates with a time period T proportional to Pa db E_c where P is pressure, d is the density and E is the energy. The values of a, b & c are :

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The figure shows a simple harmonic progressive transverse wave, progressing towards the right. The particle having the maximum acceleration directed downwards is represented by

The figure shows a simple harmonic progressive transverse wave, progressing towards the right. The particle having the maximum acceleration directed downwards is represented by

Physics-General

parallel

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