science
Grade-11
Easy
Question
Choose the odd one out?
- Launching of rocket
- Hitting a ball to a wall
- Pulling an elastic band
- Catching a ball
The correct answer is: Catching a ball
Related Questions to study
science
A man with a mass of 100 kg stands on a scale (measuring newtons)
inside a lift that moving downwards at a constant velocity of 2 m·s−1. What is the
reading on the scale?
A man with a mass of 100 kg stands on a scale (measuring newtons)
inside a lift that moving downwards at a constant velocity of 2 m·s−1. What is the
reading on the scale?
scienceGrade-11
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A van hits a light pole with a force of 500 N. What force does the van experience?
A van hits a light pole with a force of 500 N. What force does the van experience?
scienceGrade-11
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Action reaction always acts on the
Action reaction always acts on the
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A ball hits the wall with the force of 50 N. What will be the reaction force?
A ball hits the wall with the force of 50 N. What will be the reaction force?
scienceGrade-11
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On Earth a man weighs 70 kg. On the planet Beeble how much will he
weigh if Beeble has mass half of that of the Earth and a radius one quarter that of
the Earth. Gravitational acceleration on Earth is 9,8 m·s−2.
On Earth a man weighs 70 kg. On the planet Beeble how much will he
weigh if Beeble has mass half of that of the Earth and a radius one quarter that of
the Earth. Gravitational acceleration on Earth is 9,8 m·s−2.
scienceGrade-11
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Which one of the following represents newton's 3rd law
Which one of the following represents newton's 3rd law
scienceGrade-11
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When we move out of the boat standing in still water, the boat moves
When we move out of the boat standing in still water, the boat moves
scienceGrade-11
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Walking on the ground only is possible because of
Walking on the ground only is possible because of
scienceGrade-11
science
A man with a mass of 100 kg stands on a scale (measuring newtons).
What is the reading on the scale?
A man with a mass of 100 kg stands on a scale (measuring newtons).
What is the reading on the scale?
scienceGrade-11
science
Tumi presses a book against a vertical wall as shown in the sketch. Choose the correct labeled force diagram indicating all the forces acting on the book.
Tumi presses a book against a vertical wall as shown in the sketch. Choose the correct labeled force diagram indicating all the forces acting on the book.
scienceGrade-11
science
Tammy travels from the ground floor to the fifth floor of a hotel in a lift. Which ONE of the following statements is TRUE about the force exerted by the floor of the lift on Tammy’s feet?
Tammy travels from the ground floor to the fifth floor of a hotel in a lift. Which ONE of the following statements is TRUE about the force exerted by the floor of the lift on Tammy’s feet?
scienceGrade-11
science
When a 0.45 g air-rifle pellet is fired into a target attached to a glider on a frictionless linear air track, the glider moves 50cm in 3.8 seconds. Calculate the magnitude of the velocity of the pellet. The glider and target have a combined mass of 643 g.
When a 0.45 g air-rifle pellet is fired into a target attached to a glider on a frictionless linear air track, the glider moves 50cm in 3.8 seconds. Calculate the magnitude of the velocity of the pellet. The glider and target have a combined mass of 643 g.
scienceGrade-11
science
A supermarket trolley loaded with shopping has a mass of 60kg. It rolls across the floor at 4 m s–1 and collides with an empty trolley of mass 25kg, which was stationary. They become fastened together and roll on as one. Calculate the magnitude of the velocity of the two trolleys when locked together.
A supermarket trolley loaded with shopping has a mass of 60kg. It rolls across the floor at 4 m s–1 and collides with an empty trolley of mass 25kg, which was stationary. They become fastened together and roll on as one. Calculate the magnitude of the velocity of the two trolleys when locked together.
scienceGrade-11
science
A Cart with a mass of 2kg travelling at 6 mS collides with another cart of mass 0.4 kg travelling in the same direction at 2 mS. It bounces off , as shown in figure 4. After impact, the 2 kg cart travels at 3 mS in the same direction. Calculate the velocity of the 0.4 kg cart after the collision.
before collision 
after collision 
FIGURE 4 I this collision, the second cart bounces off the first cart.
A Cart with a mass of 2kg travelling at 6 mS collides with another cart of mass 0.4 kg travelling in the same direction at 2 mS. It bounces off , as shown in figure 4. After impact, the 2 kg cart travels at 3 mS in the same direction. Calculate the velocity of the 0.4 kg cart after the collision.
before collision
after collision
FIGURE 4 I this collision, the second cart bounces off the first cart.
scienceGrade-11
science
A boy on roller-skates is traveling along at 8 m s–1. He has a mass of 60kg and is carrying his schoolbag of mass 10kg. He throws the bag directly forward at 20 m s–1 relative to the ground. Calculate the boy’s speed after the ‘explosion’.
A boy on roller-skates is traveling along at 8 m s–1. He has a mass of 60kg and is carrying his schoolbag of mass 10kg. He throws the bag directly forward at 20 m s–1 relative to the ground. Calculate the boy’s speed after the ‘explosion’.
scienceGrade-11
