Physics
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Q. An object is dropped from a height of 80 m. How long will it take to reach the ground? (Take g = 10 m/s²) (2023)
Q. An object is lifted to a height of 10 m. If the mass of the object is 5 kg, what is the gravitational potential energy gained? (g = 9.8 m/s²)
Q. An object is lifted vertically 10 m. If the mass of the object is 5 kg, what is the gravitational potential energy gained?
Q. An object is lifted vertically 4 m against gravity. If the mass of the object is 3 kg, what is the work done against gravity? (g = 9.8 m/s²)
Q. An object is lifted vertically 4 m against gravity. If the mass of the object is 10 kg, what is the work done against gravity? (g = 9.8 m/s²)
Q. An object is lifted vertically 4 m. If the weight of the object is 50 N, how much work is done against gravity?
Q. An object is moving with a speed of 15 m/s and has a mass of 3 kg. What is its kinetic energy?
Q. An object is thrown vertically upwards with a velocity of 20 m/s. How high will it rise? (Assume g = 10 m/s²) (2020)
Q. An object moves with a constant velocity of 10 m/s. What is the net force acting on it? (2023)
Q. An object moves with a uniform acceleration of 2 m/s². If it starts from rest, what will be its velocity after 5 seconds?
Q. An object moves with a uniform speed of 10 m/s. How far will it travel in 15 seconds?
Q. An object moves with a uniform speed of 20 m/s. How far will it travel in 15 seconds?
Q. Calculate the gravitational potential energy of a 2 kg mass at a height of 5 m. (g = 9.8 m/s²)
Q. Calculate the weight of a 10 kg object on the surface of Mars, where the acceleration due to gravity is 3.7 m/s².
Q. Calculate the weight of a 10 kg object on the surface of the Earth (g = 9.8 m/s²).
Q. How does gravitational potential energy (U) change when the distance from the center of the Earth increases? (2020)
Q. How does the gravitational force between two objects change if the mass of one object is halved?
Q. How much heat is required to raise the temperature of 250 g of water from 25°C to 75°C? (Specific heat of water = 4.2 J/g°C) (2020)
Q. How much heat is required to raise the temperature of 500 g of water from 25°C to 75°C? (2020)
Q. How much work is done when a force of 10 N moves an object 5 m in the direction of the force?
Q. How much work is done when a force of 15 N moves an object 3 m in the direction of the force?
Q. How much work is done when a force of 30 N moves an object 4 m in the direction of the force?
Q. If 1 kg of water is heated from 25°C to 75°C, how much heat is absorbed? (Specific heat of water = 4.2 J/g°C) (2021)
Q. If 1000 J of heat is added to a gas and it expands doing 400 J of work, what is the change in internal energy? (2023)
Q. If 1000 J of heat is added to a system and 400 J of work is done by the system, what is the change in internal energy of the system? (2021)
Q. If 1000 J of heat is added to a system and it does 400 J of work, what is the change in internal energy? (2021)
Q. If 200 g of water at 80°C is mixed with 300 g of water at 20°C, what will be the final temperature of the mixture? (Assume no heat loss to the surroundings)
Q. If 200 J of heat is added to a system and 50 J of work is done by the system, what is the change in internal energy? (2023)
Q. If 200 J of heat is added to a system and 50 J of work is done by the system, what is the change in internal energy of the system?
Q. If 2000 J of heat is added to a system and 500 J of work is done by the system, what is the change in internal energy of the system? (2021)
