Answer:
Explanation:
The two triangles are similar what is the length of DE
V^2= 2* g * s
V^2 = 2 * 9.8 * 50 = 980
v = square root (980)=...... m/s
Pretty sure physical, a chemical change would be something of the time of acid rain, meanwhile physical changes are the ones that affect the form not the actual chemical composition
Answer:
marblebrainiest plz\c cmarble
Explanation: