Giải bài tập môn Lý tiếng Anh

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----- Nội dung dịch tự động từ ảnh -----
1. A car is travelling with uniform acceleration along a straight road. The road has marker posts
every 100 m. When the car passes one post, it has a speed of 10 m s-1 and, when it passes
thenext one, its speed is 20 m s-1.
What is the car's acceleration?
B. 0.67 m s-2
C. 0.67 m s-2
D. 0.67 m s-2
A. 0.67 m s-2
2. What is meant by the weight of an object?
A. the gravitational field acting on the object
B the gravitational force acting on the object
C. the mass of the object multiplied by gravity
D. the object's mass multiplied by its acceleration
3. The acceleration of free fall on a planet P isThe mass of a body on planet P is 30 kg. What is its
weight on planet P?
A. 4.9 N
B. 49 N
C. 180 N
D. 290 N
4. An object falls 10.0m from rest before entering some water. Assuming negligible air resistance,
what is the time taken to reach the water and the speed with which the object reaches the water?
5.
time / ms
speed / m s-1
1.02
10.0
1.02
14.0
1.43
Cl
1.43
DI
10.0
14.0
6. A constant mass undergoes uniform acceleration. Which of the following is a correct statement
about the resultant force acting on the mass?
A. It increases uniformly with respect to time.
B. It is constant but not zero.
C. It is proportional to the displacement from a fixed point.
D. It is proportional to the velocity.
7. An experiment is done to measure the acceleration of free fall of a body from rest.
Which measurements are needed?
A. the height of fall and the time of fall